Malicious PDF — malware analysis report

Static analysis result for SHA-256 86660d0358a5c615…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 08:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1dd0e244c96a4e1f0ac2277f1b940c9 SHA-1: 30353a9af8406fd6a9339c3e0dcc182530f5c013 SHA-256: 86660d0358a5c615270b74a4e277cded6df0ce0f4a85f94c5eb390530051fb1c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains a URL that also leads to this redirector. This suggests a tactic of creating a link farm to distribute malicious content or conduct phishing attacks.

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=etrian+odyssey+v+classes+guide In PDF document text
    • http://files.accelerateyourdegree.com/uploads/1/3/1/8/131871556/2718a7.pdfIn PDF document text
    • http://files.jonniekae.com/uploads/1/3/1/8/131856071/givib_suzut_wizer_wifode.pdfIn PDF document text
    • http://files.artconceptalternative.org/uploads/1/3/2/3/132302940/0bceb.pdfIn PDF document text
    • http://xaxibag.montangsclasses.com/uploads/1/3/0/7/130776394/zuwuwusitijud_najubumitisinem_beguzufofosomis_wobuwutemavaxi.pdfIn PDF document text
    • http://files.cbaaartists.com/uploads/1/3/1/4/131453695/fc2adbb9d.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/1/0432/7643/5621/files/analytical_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/kafuresa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/lerudefig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/baby_crying_ringtone_pagalworld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/jomamup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/gigujivej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2583/3882/files/medical_ethics_and_deontology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/rinunirajevuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2351/6323/files/psychology_of_language_acquisition_and_language_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/deviation_report_form_pharmaceutical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8723/files/welodojigisolabowi.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 4

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_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 5224 bytes
SHA-256: d58f696cc722c66fa8049131a8bc96706936403e0afaa714c779a2c9100fb12f
font_01_sfnt_off000073f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 10088 bytes
SHA-256: 0d909dcc541984a911431f8b382c7f7ed606f3311c27763d1d5f4a1e3bf625f2

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