Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d872b1cfb388e2…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 23:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e91f86774b7451d9b67ed848a7aec22 SHA-1: f8950300f5921dfea2e1853720e22ff2afbdb7a1 SHA-256: b0d872b1cfb388e20993f54b406a68a0cf8502a6aafda2320119fedd69c575c4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the string '3d human anatomy atlas', suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL.

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=3d+human+anatomy+atlas In PDF document text
    • http://nuxefab.davidagordon.us/uploads/1/3/0/8/130874575/zodaxexepepunuz_wejividutojeki.pdfIn PDF document text
    • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.pdfIn PDF document text
    • http://files.1dayresume.com/uploads/1/3/1/4/131406258/7006865.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/1/0431/7731/2407/files/46445505451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/sopotifapogusukisimibewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/bojujurulitokizolodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/75337953624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6686/5317/files/fotatajejoniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/nokarox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/76707067336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/42876936364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/sofizu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6570 4856 bytes
SHA-256: 68e3b286f54b0eb50fcfe91dde3ba70dc0ce903a57df3635c54af4069174e676
font_01_sfnt_off000075c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 10116 bytes
SHA-256: 2cfc8d2b3715e1032fe3bf876bcececd1d763b6894fde7417d8d41d6b4481ea2
font_02_sfnt_off00009860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9860 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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