Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd394a48e44fddf7…

MALICIOUS

PDF

44.1 KB Created: 2020-08-16 12:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb476bcc18328a7212ffdd732841d5c7 SHA-1: 9bb25108b43806677e70cf72357c23ef87bc6d14 SHA-256: bd394a48e44fddf779e886437ecc6ad7498e02c76ebb539fc471a69e10b96243
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.cc'. Another critical heuristic indicates a PDF link farm, with many URLs pointing to Shopify-hosted PDFs. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a lure or redirection mechanism, likely intended to lead users to malicious content or phishing sites.

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.cc/pify?keyword=table+html+template+css In PDF document text
    • http://files.willmutch.com/uploads/1/3/2/6/132681362/merudigusen.pdfIn PDF document text
    • http://berimanud.trinitylutheranelgin.org/uploads/1/3/2/8/132816202/95423.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/1/0434/0970/3061/files/anthropometric_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7000/4126/files/fokoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9041/8589/files/cell_division_mitosis_and_meiosis_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/vekurejerogewen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/zizunabedosuguniludewelof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/mathematics_formula_for_competitive_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/marale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/vivaldi_winter_violin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0984/files/naturally_occurring_toxins_in_food.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 1

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_off000072a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A3 5168 bytes
SHA-256: 30d69eb57d974b4b2ef0f7a645fb833fd5f34f7f60b2bd7d5817f7ac138eaa1a
font_01_sfnt_off00008414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8414 9408 bytes
SHA-256: 415f43e7376c47f44d3983cd0363027204864d22a9dfc75d217811186672f958

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