Malicious PDF — malware analysis report

Static analysis result for SHA-256 807289c32b1e9eb7…

MALICIOUS

PDF

114.4 KB Created: 2021-06-30 12:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: bb1654c5e2dcd605503912a77fb83e50 SHA-1: 8e5d81a3a00ec2fee87ce57e1b8106b8070748fc SHA-256: 807289c32b1e9eb76993f4d71e30db9224af8afd9f85af6c70cc731713a29e1d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS upload directories, suggesting an attempt to lure users to malicious content or phishing sites. The presence of multiple distinct hosts and the use of formcraft plugin uploads further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d502c5da9a0---83591993294.pdf In PDF document text
    • http://2sisaccount.com/userfiles/files/wopalazabadedekuledul.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160729e250df56---24135668779.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/89354871571.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/rufatekuxejisigiran.pdfIn PDF document text
    • http://guyfamilyreunion.com/clients/41950/File/mopobebeto.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607533a5a41f1---55293399911.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5711c9ccb---zasenesegulumoz.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/9dj62b3j63gu0ujuh3eqfkh9ah/84114776818.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/xepidepenepifazuvojofis.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/mnu76llopkbfk00mjtoba8i6e5/33788275485.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/623b8ebe4ece917b9276b90a7b6206dc/datadofew.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/60499883241.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d46ad7af472---givekesekizenujuda.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/894177e129bb522bc86a04692de3709b/37612577466.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/2433b8ff7cd67dceedc66e15e9ae735e/gimuvitamedipafibupuvurew.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607b00e990518---xoleforifofosi.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/0e07c9d6f89233b24e87deeb1c05b95e/gukukebobipuxunedadap.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/muvepikugonopu.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/32025346442.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/b66b3e13d3bc7071d90b08bcbede1196/nitigumugavuzofozel.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/tuguwefi.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160bf21a40d11b---66205870145.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=the+condition+of+the+working+class+in+englandPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D44 10896 bytes
SHA-256: bc02dbe3f0fdd5fbeb509813b5596d47323ffe4bec145771ccd9398378560f57
font_01_sfnt_off00017646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17646 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E58 17420 bytes
SHA-256: c98e1a6b06566d3c7dc808bc3d5b3b7b6a9b2d15d1b903039c5e1986cf6b8379

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