Malicious PDF — malware analysis report

Static analysis result for SHA-256 1553408ff0f2e4e8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 22:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 461b20079fee3ebc0da323cf34c9af7b SHA-1: c82694bef4c7458a1c186537fb7c793a5b52dd03 SHA-256: 1553408ff0f2e4e8ca4119d6613cb5f88477d41d3b3a431d6bb324d2a72d842c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation. A primary link redirects to 'ttraff.com', a known malicious redirector, likely used to deliver a payload or phish for credentials. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead the user to 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.com/pify?keyword=ielts+listening+test+with+answers+pdf In PDF document text
    • http://files.shaktishalayogaguernsey.com/uploads/1/3/1/4/131410012/solidejugamuwo-gagiperew-ridelawir.pdfIn PDF document text
    • http://files.bryaneconnellpsych.com/uploads/1/3/1/1/131164425/kipamagiwizigi.pdfIn PDF document text
    • http://files.kerrymolina.com/uploads/1/3/1/4/131452929/filekaxoro_mowebafavideja_wupot.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/1/0429/8535/7463/files/94812109240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/27538736140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1139/0115/files/doxoforedugirugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/tasolisasamipaxegopewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/solving_equations_8th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6834/8830/files/97141262457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/93348254567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/dotijuzunakupatakometu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/763527406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/32466290388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/53404684086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8307/6518/files/camry_manual_transmission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/70100661401.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_off000069c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C5 5332 bytes
SHA-256: f150f3fd4c1d220f0b6a49c0a3d94a763637361c17c41051ffd1ed5d1d26694e
font_01_sfnt_off00007bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF5 10392 bytes
SHA-256: 14326da9bd55499566db742ab5c8315a76ac6665b1fbb704b8da3e243652607f

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