Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72abfdaf764020e…

MALICIOUS

PDF

42.7 KB Created: 2020-08-15 05:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 010eec6ff77d41ffc12825aa1df9e7f0 SHA-1: 38e1b165a9bf67037bb8d79c5b6ea5a0b4de9481 SHA-256: c72abfdaf764020e2a1c8e59c56385993ba307ba6780bbf740b88bbc3edbe123
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as user manuals, with the primary link redirecting to a malicious domain. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification. The document body contains the primary lure URL and several other PDF links, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.com/pify?keyword=cyberpower+625va+user+manual In PDF document text
    • http://files.lowcarblife.club/uploads/1/3/1/4/131453998/podifepes.pdfIn PDF document text
    • http://files.pray4oaxaca.com/uploads/1/3/1/4/131406840/2034712836d.pdfIn PDF document text
    • http://files.andersonpurse.com/uploads/1/3/2/7/132740293/rosaloxigomizixiwipa.pdfIn PDF document text
    • http://files.crossroadscommunicationsgroup.com/uploads/1/3/1/4/131454634/kuxezodum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/sedak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1001/2837/files/mechanicus_painting_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/guziwexejavufir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/the_anatomy_of_revolution_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/tavavazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/30995184270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/87683599647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/novena_biblica_a_san_miguel_arcangel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/64338369543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/duzekeluwixuvapufuzuzebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4367/5560/files/883453659.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 6

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_off000060a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 5676 bytes
SHA-256: 86e44a0c37afc6ba524573f72fef4269434720e5832bc5a34fc76b4d9df2aaf2
font_01_sfnt_off000073ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 13256 bytes
SHA-256: 23c1b92a3f14e62f57e455abb581ca9d8c704549ec9f8c4be6b0b287b75f6328

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