Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba0405656912a05…

MALICIOUS

PDF

46.0 KB Created: 2020-08-09 11:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9a0290e58af9bed44bc3627799aa4cf SHA-1: eb69b0418bdfd9796701695dcaf0885369cfbeb2 SHA-256: cba0405656912a0592a3667252c9569bdac24922f4d639ee11d2381169cb448b
194 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, many pointing to Shopify domains, but one critical URL redirects to a known malicious domain. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be a social engineering lure, directing users to a malicious redirector disguised as a PDF download. No scripts were extracted from this sample.

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.cc/pify?keyword=cause+and+effect+analysis+pdf In PDF document text
    • http://xanejidub.jesusexplored.org/uploads/1/3/1/0/131070786/1278027.pdfIn PDF document text
    • http://pifekowiz.kissthefrog.ca/uploads/1/3/2/8/132814930/kuxiku-paxexulusop-sinomegadeg-lemona.pdfIn PDF document text
    • http://files.canadaparkour.com/uploads/1/3/1/8/131871729/tijiliwe.pdfIn PDF document text
    • http://files.vickylneal.com/uploads/1/3/0/8/130813055/rofumam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4135/7977/files/texas_rental_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39843759369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/candida_bucal_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2799/files/77455015477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/ribad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/panezisuwewudosinogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/xilagesufuzuwelifiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/58482839830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/31600860792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/moxowifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/37572763057.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
🗂 Part of campaign: highmarkcompanies.com 4 samples

Related samples 5

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_off00006964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6964 4952 bytes
SHA-256: f41e66e79127f5e0262e48485ac2661048fbecbe2e496fe542c22549b6d37a18
font_01_sfnt_off00007a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5C 10112 bytes
SHA-256: cd1e983e6f83a5236798682e01ef4d97230bc9517afa8cf405a36abd0856121a
font_02_sfnt_off00009cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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