Malicious PDF — malware analysis report

Static analysis result for SHA-256 d778196f106b12bf…

MALICIOUS

PDF

40.9 KB Created: 2020-08-10 17:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d575e3850218e2b45936b809f231269 SHA-1: d2977b9122e82f4076c19f6438b11fec28289339 SHA-256: d778196f106b12bfc1a897240983cad56c31629e271715375308a632954d4147
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, 'ttraff.com', which is a common tactic for delivering malicious payloads. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other links to Shopify-hosted PDFs indicates a link farm strategy to improve search engine ranking and visibility for the malicious content. 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.com/pify?keyword=step+growth+polymerization+pdf In PDF document text
    • http://files.explainingmaths.com/uploads/1/3/1/4/131453698/demajoluvumetolodo.pdfIn PDF document text
    • http://files.liftislandfashion.com/uploads/1/3/1/0/131070178/novifof-panefixeloje.pdfIn PDF document text
    • http://ziror.harvestogtc.com/uploads/1/3/0/9/130969061/midajupabiga.pdfIn PDF document text
    • http://files.sanmateolimos.com/uploads/1/3/1/3/131383553/612544a.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/1/0431/4664/1570/files/72955089768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/69409801633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/sokixafodojobozomibaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/bwv_1065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92835403356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/kitujezorugarusazamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/28649288079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/homestuck_minecraft_skins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/42406237146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63529720688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/edema_cerebral_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/88845117740.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_off000061a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 5624 bytes
SHA-256: 4a7faabf1060ace7baf403760ced0cb7a803c49710bf2e301fc60e1fc0e3eedd
font_01_sfnt_off000074c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 10088 bytes
SHA-256: 5cb6621b4b26919004ead72e0bfdaa66ff3b3fa8e694fca53025968cb08b52f1

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