Malicious PDF — malware analysis report

Static analysis result for SHA-256 2112aa8414707d18…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 02:26:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f405f83f0fbdd4d23b0b8937129440b4 SHA-1: bc48957e8e3fcd02e1707a9d56032c1ac0c9a995 SHA-256: 2112aa8414707d1815d8bac1be84116d71b983f6f30224679951c33353d5ac7b
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with one critical heuristic identifying it as a malicious redirector link pointing to 'ttraff.com'. Another heuristic flags it as a PDF link farm, indicating a potential SEO manipulation or content distribution scheme. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the sheer volume of links suggests a delivery mechanism for further malicious content or a spamming operation.

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=bouddhisme+livre+pdf In PDF document text
    • http://files.blvdhoa.net/uploads/1/3/1/4/131437295/nulatotu.pdfIn PDF document text
    • http://files.angelagoodetaylor.com/uploads/1/3/1/4/131454850/3083972.pdfIn PDF document text
    • http://files.mutianyugreatwalltours.com/uploads/1/3/1/4/131406258/1b126f4c35a.pdfIn PDF document text
    • http://vigel.pcommops.com/uploads/1/3/1/6/131607600/3295361.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/1/0432/5982/2243/files/27274145072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/tigid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/partituras_de_guitarra_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/marcus_aurelius_meditations_latin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/first_world_war_history_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/87028059634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/64725900374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/21725263125.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_off000063b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B2 5180 bytes
SHA-256: 0838394bba9f2550517f61fbc5cb6be53d9bb3cddf7d23ea529df72e2bafd2c8
font_01_sfnt_off0000752d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752D 10088 bytes
SHA-256: 3271454998f9a64c6f8c74d22ba6ff5219a6274a0c32b8befd32ed6bf34d78cc

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