Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9484a1af8abca67…

MALICIOUS

PDF

84.7 KB Created: 2020-11-20 06:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 78196682127685fd0bf596e2e68f61e3 SHA-1: 22482295c0f4b878edaaee4eacfe609715982785 SHA-256: c9484a1af8abca6760cf8b52369191d7071ac6e9c2a05d15224f204ff41a3d00
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a mass of external links, identified as a link farm designed to redirect users. The primary URL, 'trafffe.ru', suggests a malicious intent to drive traffic to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly indicate a phishing or traffic-generation scheme, consistent with the ClamAV detection of Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffe.ru/123?utm_term=safety+hazard+risk+index PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402481/normal_5fa34255e77fe.pdfIn PDF document text
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/97878.pdfIn PDF document text
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/nonumotamale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392659/normal_5fb580a780544.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/d1fef4448b24de.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/95ecd0d3.pdfIn PDF document text
    • https://pekireraseg.weebly.com/uploads/1/3/4/7/134720831/8485986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5f8b8169600d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450502/normal_5fa770722c4c1.pdfIn PDF document text
    • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/9945542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_5fa6da3807150.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/ti_lin_qun_mobile_apk_appvn.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/53996897486.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/67264029357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b38b4e3-0b2a-4494-ada3-1ab52367fcf4/89533138638.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000110d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D9 5352 bytes
SHA-256: db817b192d322cdbe757d63948590d3018512f5c8c3c0cb523551c3ae605d5cc
font_01_sfnt_off0001231a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231A 10180 bytes
SHA-256: 807366562326fa40a8616f75a9a3dcbc31813af346d0753802036007125549ee

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