Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4675d20cec79787…

MALICIOUS

PDF

41.2 KB Created: 2020-07-31 04:55:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7db2754c2c926682526e38a336cb1701 SHA-1: 47518ababa3abe09f0e8538d46bbb2e42eda4a20 SHA-256: a4675d20cec7978747c3543ad29479d9c89edc2a442ad654d79020f3bf4cf94f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains numerous links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure for the book 'Things Fall Apart'. The primary malicious URL, ttraff.com, is used to redirect users to a link farm hosted on Shopify, which likely serves further malicious content. The presence of multiple external PDF links suggests an attempt to distribute or host malicious content across various domains.

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=chinua+achebe+things+fall+apart+download+pdf In PDF document text
    • http://files.marine-concepts.com/uploads/1/3/1/4/131413718/1952902.pdfIn PDF document text
    • http://files.craignowickicollection.com/uploads/1/3/2/6/132695636/9ed3097cdce6.pdfIn PDF document text
    • http://files.swissornaments.com/uploads/1/3/1/8/131871390/7938973.pdfIn PDF document text
    • http://files.earlyspirit.ca/uploads/1/3/0/8/130813834/1f8f78fcb1c.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/1/0435/4647/6708/files/gagazebelekikavavidafoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/fugeniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tapowizilefaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2527/files/xutaferibiritogefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/fekojabipod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2956/9429/files/45100425668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/57791610824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/18147270688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/benubitazokosawinebujefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/fokozinurutopagefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/65801059817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/tajilutojafizulovafowus.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
🗂 Part of campaign: frs.com 4 samples

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_off0000640e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640E 5552 bytes
SHA-256: 600ec2101c88122a36d29cbce4a32ebee6ae1f59c7e0739641bd6338691bb7bf
font_01_sfnt_off000076e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E8 9584 bytes
SHA-256: 69611b1f93def8e4c382f46a221dc697e87860156a2e211a9a1b9dce9da3a32a

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