Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2b433149518ac5…

MALICIOUS

PDF

44.9 KB Created: 2020-08-24 02:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d07d28a1f981d68f4d92dd8e06f917b6 SHA-1: 8fadfa1831920051bd46ec5b6f5b14d66da9c264 SHA-256: 8c2b433149518ac54512715cd4528c6826fe75bcb6e41ee2eee5138a18941b4a
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, including one that redirects to known malicious infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'auto chess mobile items guide', suggesting a lure for users interested in such topics. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm designed to distribute malicious content or traffic. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=auto+chess+mobile+items+guide In PDF document text
    • http://files.grayducks.org/uploads/1/3/2/6/132696274/fasamodanegefuk_jakutuvan_tijokowagetop_fumob.pdfIn PDF document text
    • http://xameda.coldironarts.com/uploads/1/3/2/3/132302870/sinifiva.pdfIn PDF document text
    • http://takez.calliebell.com/uploads/1/3/1/4/131453329/xadorolesas_mukope.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/1/0432/5477/5970/files/15973435202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/68556983024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/tanodipukuxapebun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9718/5701/files/62935788798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/pejuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8978/7048/files/bad_habits_esl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4500/8039/files/altruism_social_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/33039770433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/mazunolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/kofubuzuzasugolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5280/9888/files/73491054530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/51734532381.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 3

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_off00007243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7243 5176 bytes
SHA-256: f94d1119242bc9d8d9d60458710be81a9f33b8927305874c4a00f0fd9431d3be
font_01_sfnt_off000083bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BC 10272 bytes
SHA-256: 6d7cbc05af24265f55d7f635b1e81d30c3a30a5c368ee03312d2be9f55e3c32d

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