Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab5ec464f811594…

MALICIOUS

PDF

92.9 KB Created: 2021-07-01 15:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: f32fb6e027cb186af6091536bb95aa5b SHA-1: 0980875f29d8a5de6a4010597af6ccda5889dce9 SHA-256: 8ab5ec464f811594d284d0fec60bede53ed9d5023b90c4718c6a1d126b2fa361
156 Risk Score

Malware Insights

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

The sample was flagged by a machine learning classifier and ClamAV as malicious, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The presence of numerous external URIs and link farm indicators strongly suggests a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://bringem.de/wp-content/plugins/super-forms/uploads/php/files/07fbaa327a8c3f7ddd961f8e39a68a46/kazilofojomalodur.pdf In PDF document text
    • http://mai-colle.jp/userfiles/file/12026067754.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///81112747864.pdfIn PDF document text
    • http://lovellreunion.com/clients/4/42/420738e4954c29d3cfd02fdb1bc9139f/File/74532955241.pdfIn PDF document text
    • http://bassbasement.org/userfiles/file/pedobuza.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/guxewoxujebilanujukap.pdfIn PDF document text
    • https://roc.mn/uploads/files/83973229240.pdfIn PDF document text
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/cb018a1b4d00843d86ba719217e875d7/vovemepamibuwije.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/82de7c7805af63503f3f7cef4044875b/fejedikerazujofatagaram.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/755e1614de5a807976007053405c3479/88312459331.pdfIn PDF document text
    • http://westmoorclassof1965.com/clients/5/52/52ec68f2b927accf75267cb07bfcc891/File/35617248670.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/49ee0a3ddd78f9bdd27f7acc08d4b9df/51389821675.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/43839258633.pdfIn PDF document text
    • http://toonesk.com/upload/fujuvagoxupibemekugowel.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc298ee04b3---zawukukokiromepevaja.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/356b002803e24a842825590b940e1f81/11816583851.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160ddaeb1b1b91---dojeluvuxogagirur.pdfIn PDF document text
    • https://zoldlepes.hu/userfiles/file/73105897242.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/wumarokezafukenejum.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6b810ce64---nopuvalelawalaw.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/fe8b769d71d6da50bc3b612aca63bafb/woxurutizevas.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf1a30d4ec4---togemewomon.pdfIn PDF document text
    • http://conomiya.com/images/uploadedimages/file/pisokevaten.pdfIn PDF document text
    • http://3e-recycling.ru/app/webroot/filesfiles/14960715207.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/saxaja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=death+in+venice+analysisPDF 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_off00010881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10881 18364 bytes
SHA-256: ec4873464660025752a7b7fe1fa07df9b671b7065174d27a0e157499ba29bb75
font_01_sfnt_off000136ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136EF 10288 bytes
SHA-256: 03b4ceff490c56a6e296120720eb0a7684877d271aa098d5120198871782c8e6
font_02_sfnt_off00014e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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