Malicious PDF — malware analysis report

Static analysis result for SHA-256 f70879f64736a57c…

MALICIOUS

PDF

81.7 KB Created: 2021-07-17 02:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 56d5d4166f4062f893dae12a3a26b4c9 SHA-1: cc3504d013657cad3b56a8c3b1166ff434743729 SHA-256: f70879f64736a57c840ddb0f60ce3344b097f51087c89653aaa70efc92e157ed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or disposable hosting sites. The embedded URLs, such as http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7966c3beb1---79262763932.pdf, are likely intended to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://medius.sk/userfiles/file/68901536673.pdf In PDF document text
    • http://driscollandgibson.com/images/edit_images/file/53552150238.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/3h5p82ek6l857ijjgjtfcgjial/53563659943.pdfIn PDF document text
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/cimam2km58vf0kebb8bdtnc4d5/fofatitevop.pdfIn PDF document text
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/fokimunobunuvapodebusagat.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/93fbb1c9b0b784d1eefaaaf376d3daea/limir.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/51757936662.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/qs0l4mvd2a8jgai9ds51ip820p/24534791545.pdfIn PDF document text
    • https://arket.io/wp-content/plugins/super-forms/uploads/php/files/1dmcncerka3gl5jl08o34menm5/xebakigoxaxurusodiselor.pdfIn PDF document text
    • http://naturallabs.de/userfiles/file/pikebuwamexiliwuleb.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/zitejel.pdfIn PDF document text
    • https://actorconseil.com/files/file/wavironodojugew.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebc80cd2b9---bitumojopurifafonox.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/13dlj2ahpfgdhje16dfulltoea/gugafiwapusavefegilox.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/1046d870dc4ca5ef6042d0442529bd64/nukamikadovopi.pdfIn PDF document text
    • http://uralinteh.com/uploads/files/xisogemokiwig.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/9ef0626fe7b3953334f267c89138d4db/40421315975.pdfIn PDF document text
    • http://imailbox.nl/images/uploadedimages/file/dovomulinosiwipejugegu.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160859fff09be3---90051475776.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1608573b2accb1---42151391243.pdfIn PDF document text
    • https://hgb.se/filer/file/jujivirelibenugetaxiw.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1a906aeec---binizazuni.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021062007452320.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e036195451e---zenejej.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/d2dtnkbu6f60o447k3o0lfie2e/47826852304.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7966c3beb1---79262763932.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/ef34fa8a54e4a98f6fd215e7448d5139/41982853138.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=edhesive+ap+computer+science+principles+answersPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B4 11016 bytes
SHA-256: 436c945722987103fbc6fcd91d6c255e576f9afb683584300cdd11cd890bc318
font_01_sfnt_off0000dd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD30 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF541 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467
font_03_sfnt_off00010ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB3 17660 bytes
SHA-256: 4c36d048812e85476dd6d9bdef761c73e5aeeae6eeef89a72ec7175a35c27c8f

Open this report in the interactive analyzer, or submit your own file for analysis.