Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca1c2c6944624e1…

MALICIOUS

PDF

62.6 KB Created: 2020-11-14 11:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a330e30b32aa680f44625bf7181bd961 SHA-1: 11b173159aca050c156377b2e8769319c5816294 SHA-256: 7ca1c2c6944624e1dd42de43bbed299b73be7f39e85fefc4c1f99d09ef3b6355
262 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous external links, including one to 'traffking.ru', suggesting a link farm or redirection mechanism. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, likely for SEO manipulation or to host malicious content. While no scripts were explicitly extracted, the PDF structure and external links point towards a malicious download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?utm_term=amar+ujala+news+paper+lucknow+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5fa50f2314db9.pdfIn PDF document text
    • https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/5e87f7dd.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/piedmont_blues_tabs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421036/normal_5fa34f9a3925a.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/38762362244.pdfIn PDF document text
    • https://wusumojasojufe.weebly.com/uploads/1/3/4/3/134352244/6168762.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/dosis_amoksisilin.pdfIn PDF document text
    • https://derifopo.weebly.com/uploads/1/3/4/4/134490925/muxeruxadomigofaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409250/normal_5f98ec2cad825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5f9597579d4e0.pdfIn PDF document text
    • https://rodekimixew.weebly.com/uploads/1/3/4/3/134314341/pijunofegi_nemebu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA56F 5524 bytes
SHA-256: 7256a1afd82a127e44e8b19c6055f6b82cc9aa761b8071618a75f4c8752c8d02
font_01_sfnt_off0000b833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB833 9612 bytes
SHA-256: d8d3241e9193bfcd27cf00f1c92e7d0a88b440edfc8c42c930d3aee06cd6a238
font_02_sfnt_off0000d876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD876 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6