Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c67474e353f357e…

MALICIOUS

PDF

38.4 KB Created: 2020-08-16 23:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac40aa91bf53fb24b65778254c4946b9 SHA-1: f2f1245e4e31e4078f4413c773cbafb1343e8636 SHA-256: 1c67474e353f357e9e4cb0a497b4ce34dfabe008fcda889f63c47034312dc03d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains commonly used for SEO link farms. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/pify?keyword=bye+bye+video. The document body, though partially corrupted, also contains this URL and references to other PDF files hosted on Shopify domains, suggesting a deceptive lure to drive traffic to malicious infrastructure.

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=bye+bye+video In PDF document text
    • http://files.lccyearbook.com/uploads/1/3/0/7/130740166/7986434.pdfIn PDF document text
    • http://mogaku.djccustomcrafts.com/uploads/1/3/1/6/131636664/9676488.pdfIn PDF document text
    • http://lomoz.showuplifestyle.com/uploads/1/3/0/8/130814328/zumekukuzaki.pdfIn PDF document text
    • http://files.lanternaconsulting.com/uploads/1/3/1/3/131398177/vokot_webafedani.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/1/0436/7689/3334/files/gist_family_catering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6122/9208/files/padi_enriched_air_diver_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/36044348240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/3903117263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/duxubivoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4564/9574/files/87996203034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/97857673647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/personal_finance_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4209/2694/files/60704974307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/dokitaleseluvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/st_556.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 5

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_off00005bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBA 4656 bytes
SHA-256: 84ca9eb6ac91079db14c3da3ecf0b3ed79598b9d98e8218480b8ec61c39c5bad
font_01_sfnt_off00006baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAF 9852 bytes
SHA-256: e9819073d641b605199f580bb99eba755d2d0cf42c0002833cfb7701711fc3ce

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