Malicious PDF — malware analysis report

Static analysis result for SHA-256 394ac6b60170a6dc…

MALICIOUS

PDF

38.5 KB Created: 2020-08-10 11:54:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd057d43b510f3242dad39f55308c22e SHA-1: eaaed08adb41216c24c3727484996932950822db SHA-256: 394ac6b60170a6dceb1cf4ebe13487ea5ce08da6b13a82c5dcf7d1fe9a65e663
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, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=breeding+and+seed+production+of+finfish+and+shellfish+pdf', points to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf.

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=breeding+and+seed+production+of+finfish+and+shellfish+pdf In PDF document text
    • http://files.healingpartnerstt.com/uploads/1/3/2/6/132695273/mizefo.pdfIn PDF document text
    • http://files.allthingsartstudio.com/uploads/1/3/1/8/131856290/732103.pdfIn PDF document text
    • http://files.crownguitar.com/uploads/1/3/1/6/131606393/2887847.pdfIn PDF document text
    • http://files.batterystbookco.com/uploads/1/3/1/4/131410012/dd4096.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/1/0431/1180/9190/files/96937858220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2105/6672/files/gubejupazitudopemutonefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/sobuzanulepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/dojejovobekuzakonobeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/bsc_psychology_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8542/1978/files/69349289594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/kupusejajabazage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/63654190301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/13582126789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/55283906298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70745323757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/6753692296.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
🗂 Part of campaign: thearamaicscriptures.com 5 samples

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_off0000580e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x580E 5468 bytes
SHA-256: 339e2ab8741d33ef8e560b5667c0cca413beace9a91d04f71ce3d29e5bdbe367
font_01_sfnt_off00006aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 10076 bytes
SHA-256: de3ad3b9c2c6ea5db47e72d5a77d1b65f5fca20a4f35326ee8edc66674fc9fce

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