Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b8b335f67196a7…

MALICIOUS

PDF

105.9 KB Created: 2020-08-08 11:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b2c1c4818604edc834efa232e40b910 SHA-1: d7ffd3072247500e04dd6954a7afd954231cd6c6 SHA-256: b4b8b335f67196a76fe5332b8eb7a351e524dd6348a0f59a8202d8ddd157ac36
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link points to 'ttraff.ru', a known malicious redirector. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning attempt. 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=agamben+what+is+the+contemporary+pdf In PDF document text
    • http://files.gbaplayball.com/uploads/1/3/0/7/130738778/8fb5ec0f6a5206.pdfIn PDF document text
    • http://files.freeheartclinic.com/uploads/1/3/1/6/131637211/1376534.pdfIn PDF document text
    • http://files.dealsrgreat.com/uploads/1/3/0/7/130775511/5164190.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/1/0431/0673/0144/files/jabunoxagewutigenezew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/65414882543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/36333505438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/analysing_survey_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/96881304112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5349/5958/files/21040013697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/1941726796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/legubizemoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/pokizeluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/82142146676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3893/1109/files/46819537654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3898/9718/files/mizezogotal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/lalenekunus.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 7

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_off0001548c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1548C 5648 bytes
SHA-256: 70f8bbeb99cb68c58f6d94f5d5ff85453f1ac18261d710bdf51b5ffb3f196008
font_01_sfnt_off000167a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167A0 10564 bytes
SHA-256: a54dcf896b66b0104d697ceb97bddb0f3fb93c25e1325e659a0e0c45f5c43474
font_02_sfnt_off00018b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B8A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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