Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68cbefec4ee340a…

MALICIOUS

PDF

33.7 KB Created: 2020-08-03 09:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33a5ce451099873418b7a607d4fe4a37 SHA-1: 76cee6a87d329729aa458ca272e9e4a6014bb556 SHA-256: d68cbefec4ee340aaac56382eefa082dcd79fc8d3c842b05f377ddb55494d4e2
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded URLs, many pointing to Shopify domains, which are likely part of an SEO poisoning scheme. One critical heuristic indicates a direct link to known malicious redirector infrastructure at ttraff.com. The ML classifier strongly supports the malicious verdict. No scripts were extracted, and the document body is heavily obfuscated, but the presence of a malicious redirector URL is sufficient evidence for a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=kawasaki+bayou+300+manual+pdf In PDF document text
    • http://files.firpoint.net/uploads/1/3/1/1/131164474/barupi.pdfIn PDF document text
    • http://files.westfieldhighschoolgirlsicehockey.com/uploads/1/3/1/4/131483445/wosokizinewa.pdfIn PDF document text
    • http://files.kroepfer-club.com/uploads/1/3/1/6/131606965/zoxuta_peguma_jowigamebawova_diborib.pdfIn PDF document text
    • http://files.yogaresearchsociety.com/uploads/1/3/2/6/132682802/b65779bf.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/1/0427/5906/1670/files/gekedasaparana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/mexipevinaxenijujabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/jesowewijumeperadavobimez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/convert_avi_ti_dvd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/rasepezegepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/kepomomopopuvanogeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/zonufevugananej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8905/8209/files/50141623800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/komogomirefivusesubemal.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_off000046c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46C4 5764 bytes
SHA-256: 3079d8a8e50eef68220133e13f5227d63565c297b0ba8945b6409e9f5403efde
font_01_sfnt_off00005a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6E 9372 bytes
SHA-256: f8e733db5568a4071b5a1642bdc06efa3e72b8aa4542a6e8aa40f5bae55c39b8

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