Malicious PDF — malware analysis report

Static analysis result for SHA-256 004f2ea39db744f2…

MALICIOUS

PDF

46.2 KB Created: 2020-07-30 15:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6657741430224369ec9302b1202252e SHA-1: 34ee0eb0c4bed09e74a978266d5586b5f1a58430 SHA-256: 004f2ea39db744f26fe37388a801ec40550b8bd30634b3e9a3eb21792b7aee00
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the heuristics indicate a large number of external PDF links, characteristic of SEO link farms used to distribute malicious content. The ML classifier also 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/wb?keyword=field%20experiments%20gerber%20green%20pdf In PDF document text
    • http://files.thegirlsatcarolynk.com/uploads/1/3/1/3/131380539/1425960.pdfIn PDF document text
    • http://files.cfcedinburgh.com/uploads/1/3/1/8/131871698/xuvenogapu.pdfIn PDF document text
    • http://files.thewaycommunitycenter.org/uploads/1/3/0/7/130739225/4fee1f4c523a05.pdfIn PDF document text
    • http://files.canyonchapel.org/uploads/1/3/0/8/130873715/8419160.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/1/0430/7720/6165/files/tugik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/56214045615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/zazusatavonaxuket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/rowujekigemebutavawon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/xetibomum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/xasurufotumenef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/98822665180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/sirobemivaxinape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/puwogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/vukewul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/15914979835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/welujefaxunafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.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 4

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_off0000775c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775C 4992 bytes
SHA-256: f7e30441c7e11de40a22f5a0e9473e61194be7442d043a65d2589cb625291ef9
font_01_sfnt_off00008836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8836 10388 bytes
SHA-256: 6441ad9b5b3072d4684f2d9a5accb90edf7cfddd754161a2388093fe0c5c392f

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