Malicious PDF — malware analysis report

Static analysis result for SHA-256 7784f70d98b187ef…

MALICIOUS

PDF

37.5 KB Created: 2020-08-21 12:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26622ddd1686fd6c7cf02d8a6c0fb1c0 SHA-1: e1ac9a6c68fea076635c1df6108a67d334185756 SHA-256: 7784f70d98b187ef42ebc59016d6c25998007161f48a3376d0783274af85ab31
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm of numerous PDF files hosted on Shopify and other domains, with a primary redirector at `ttraff.ru`. This structure is indicative of an SEO poisoning or phishing campaign designed to drive traffic to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=buy+foamed+pvc+sheets In PDF document text
    • http://raziwejo.katemcculloughwaterart.com/uploads/1/3/0/7/130775818/5311396.pdfIn PDF document text
    • http://nuvaluj.tobibeck.com/uploads/1/3/2/6/132695569/6772666.pdfIn PDF document text
    • http://files.jaytaylor.store/uploads/1/3/1/4/131407423/5928647.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/1/0433/7205/2643/files/fititimebuponumalokuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/hallelujah_viola_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8383/9128/files/metejeluniwenurasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/62940029427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/pitasijewemepidiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/kuzavilanumavaromofutefat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4539/5368/files/88681215955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0531/3177/files/77278797598.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 2

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_off00005415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5415 5480 bytes
SHA-256: b9eefee50cc2f6a8cfe51b8528039c269063945f5c431b67a18a5dedf3fe96fc
font_01_sfnt_off000066b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 10216 bytes
SHA-256: 78e85cf8cffd03abfe16a9bdaed29677c96086613da66e11a8ea0a2a0537ceaa

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