Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ac4a7759d5f3d3…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 21:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4a314d03271dce5a7570bec35bc4374 SHA-1: 5d19a3adac6c6ee77d22f42c296e661ea3b7caab SHA-256: e7ac4a7759d5f3d338840dd1588243e620ce88ac2fc1633be9950024ca0406cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a 'credit note in gst pdf'. This indicates a phishing or scam attempt. The document also contains a large number of embedded links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be directing the user to malicious infrastructure.

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=credit+note+in+gst+pdf In PDF document text
    • http://files.nordcapetravel.net/uploads/1/3/1/4/131453136/fajisoduzibutisizez.pdfIn PDF document text
    • http://files.pugetsounddoodles.com/uploads/1/3/1/4/131437701/6856982.pdfIn PDF document text
    • http://tetaduzag.perthtamilchurch.com/uploads/1/3/1/4/131482962/sawusudip-mibira.pdfIn PDF document text
    • http://files.stemacademyband.com/uploads/1/3/1/4/131454345/kurub_jesulademeseza.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/1/0437/9515/3058/files/low_back_exercise_aaos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxepetumikikexozifaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/modulo_certificato_anamnestico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7843/8302/files/festo_pneumatic_cylinder_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/cuestionarios_ser_bachiller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/21881272382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/bible_study_methods_rick_warren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6354/9845/files/26901309963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8484/0089/files/65001757414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4245/3157/files/wozozosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/581871399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/66847419207.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 8

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_off00006725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 4872 bytes
SHA-256: f86955b6b0185dbcaa7b60df8636a070965bdcf4613b3b8638673ae5c7a739bf
font_01_sfnt_off000077c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C9 10292 bytes
SHA-256: e0f4575b91a4b03c0fac09d536a157f56323f881d0edf41f4b5869dd43b83b7b

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