Malicious PDF — malware analysis report

Static analysis result for SHA-256 642028e7b275fe00…

MALICIOUS

PDF

41.6 KB Created: 2020-08-16 17:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66ce4f1d528b27bf1cefdb8c64a73d0b SHA-1: 76328ef926aa09d7141a3587f1d4c4984708c73c SHA-256: 642028e7b275fe001dc1a62b9f295d83c251890c809cfa132d2de4eb72eb60eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body text, though garbled, includes the same malicious URL and a benign-looking Shopify URL, suggesting a lure for free downloads. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful content.

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=amnesia+collection+switch+performance In PDF document text
    • http://files.celestejohnsonlpc.com/uploads/1/3/1/4/131453588/667108.pdfIn PDF document text
    • http://jopagif.junglekitchenmn.com/uploads/1/3/1/6/131606552/somopazawa.pdfIn PDF document text
    • http://files.steadfaststeeds.org/uploads/1/3/0/7/130775658/pogaf_dekotuwomupido_tinefo.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/1/0432/7201/1931/files/83065938895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4619/7653/files/xibij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4514/3206/files/34912090610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/69360354364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/lizasonuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/gijijulimitiwidodiroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/34423723378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3741/5829/files/que_es_la_brecha_anionica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/biwufujuduwegix.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_off00006568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6568 5336 bytes
SHA-256: cb2a5c56467c0a7a2e8f760d9d57929824a47521bb78557ab3b0d0836a78b882
font_01_sfnt_off0000776a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776A 10112 bytes
SHA-256: 25ec45628071739717e35c0a3e82271fa9d55995d3c24494fe5e04c10d52efe6

Open this report in the interactive analyzer, or submit your own file for analysis.