Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c987f4b7129448…

MALICIOUS

PDF

45.5 KB Created: 2020-08-12 01:18:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63310c03dc10dece1a6cbf3c3fde8f53 SHA-1: 0ec09733d0ca1cd0354d18e3437738a34287b23d SHA-256: 13c987f4b71294488e7212958e66e3ddbf7a15e8b3a1e954864f855f3829f101
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as a redirector at 'https://ttraff.cc/pify?keyword=alberta+vehicle+bill+of+sale+pdf'. This tactic is often used for phishing or to distribute further malware. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests an attempt to obscure the final malicious destination.

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=alberta+vehicle+bill+of+sale+pdf In PDF document text
    • http://files.friendsofrothrock.org/uploads/1/3/1/4/131482931/kekawuka-jisoxitu-rakaxaxim-dozebon.pdfIn PDF document text
    • http://kobalobew.sccliteracyproject.org/uploads/1/3/0/9/130969723/banisekuvezevo_lojodoj.pdfIn PDF document text
    • http://files.backtoroyalty.net/uploads/1/3/0/7/130738859/4406150.pdfIn PDF document text
    • http://files.markzauss.net/uploads/1/3/1/3/131380786/makaduwate-tipozixidil-kubifut-kopudisunega.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/1/0430/4309/4677/files/66741825591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3045/2123/files/20259872336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/sivuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/jizojilewotitegavut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/kavebidoveja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/riwoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/875834004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/doxuwuvisodika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8157/9161/files/48035105506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/19207768309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/adrenergic_and_cholinergic_receptors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/69080776381.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EC 2828 bytes
SHA-256: 3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec
font_01_sfnt_off000072e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E7 5432 bytes
SHA-256: e601a4fe3fce27e3f53627ad58ef37f74c9d9e66b26bfe40074e87da7d92d16d
font_02_sfnt_off00008557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8557 10196 bytes
SHA-256: c49190356efbae15ebae292f8d17927a0f81694d93aaab07dac7c5696b8e78aa

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