Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b971f6ae860c3b4…

MALICIOUS

PDF

44.9 KB Created: 2020-08-19 10:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ec01798787546ee268452fc878372e0 SHA-1: 46a06c350077925d94cd7353e77bf6d2fccc5fc0 SHA-256: 7b971f6ae860c3b4b60d059355a08d61bd794ac378affcbb1462715170dbe5dd
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary redirector identified as 'https://ttraff.ru/pify?keyword=format+code+js+sublime'. This redirector is flagged as malicious and part of an SEO link farm, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to code formatting and URLs, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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=format+code+js+sublime In PDF document text
    • http://files.carsonfootball.com/uploads/1/3/1/4/131437987/kogigerivuwav_vomot_puxinemuwekotaz_nunogenikawit.pdfIn PDF document text
    • http://files.stalbansdavenport.net/uploads/1/3/0/9/130969424/5f53c833fa.pdfIn PDF document text
    • http://files.californiawestgroup.com/uploads/1/3/0/9/130969932/zumavakuwes.pdfIn PDF document text
    • http://files.arkansascloggingcouncil.com/uploads/1/3/1/4/131412032/2bede96.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/1/0430/9558/9013/files/96207048454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1900/9173/files/bach_fugue_in_c_major_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/36709032679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/45181753658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/97624763103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/18361515739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/duzedowifidagujabovubifam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9981/6090/files/94874774471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/xaroverapufizuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/3158909822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/bewonelepebikenim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/biruludanur.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_off00006f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 5256 bytes
SHA-256: c4371dc0de963fcc76337bff1bc36dfeabeb62989bec502ceb852acfead1cf38
font_01_sfnt_off00008132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8132 10848 bytes
SHA-256: 76fda53024f39f5d028a2bcd367530edcd1a9db068e717b1bca979cc3ec9000d

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