Malicious PDF — malware analysis report

Static analysis result for SHA-256 812d3565bd99283a…

MALICIOUS

PDF

48.3 KB Created: 2020-07-31 05:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c70d68d9b48e0b4fbbde86515a7b7a3 SHA-1: 4067ecc1a76fa446942d6557a261f17e992508fc SHA-256: 812d3565bd99283a32d5235351cb50e667e07585e0d7582d7d51badcba7d72ba
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a redirector (ttraff.com) which is associated with malicious activity. The redirector, in turn, links to a large number of PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=livre+d+alphabetisation+pdf In PDF document text
    • http://files.settle4mettle.com/uploads/1/3/2/8/132814439/lorowu.pdfIn PDF document text
    • http://files.ourhousecallvet.net/uploads/1/3/1/8/131857071/semosi-kimixasobal-baxokuw.pdfIn PDF document text
    • http://files.emsteps.com/uploads/1/3/1/6/131637055/dujadebewagif_nokesugij_zegosasera.pdfIn PDF document text
    • http://files.bestgardendesign.co.uk/uploads/1/3/1/8/131858592/rujapoxopade.pdfIn PDF document text
    • http://files.mylighthouselearning.com/uploads/1/3/1/4/131407227/fojate.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/1/0432/0827/8171/files/19988857300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/janirukiwuwig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17673355306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/nazosotivesifunukevarukig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/69327158201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/jixipel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2333/4567/files/kexagesuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/15823384250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/16915868897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1777/8838/files/gojonizelavoteja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/53869164798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/mawiguxozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7641/files/sepimigajubez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/lisavedidesunaleboro.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3B 5060 bytes
SHA-256: ffc29c468b4ba413412799f788afe9abc2801614a7438f356671c3290c7bcb0e
font_01_sfnt_off00008d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5B 11580 bytes
SHA-256: 1cc045b2d02b63b858752ca4fe54878fe0cd48d65086c5bdd39047e56468b046