Malicious PDF — malware analysis report

Static analysis result for SHA-256 72206f67821854a9…

MALICIOUS

PDF

76.1 KB Created: 2020-10-04 17:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6aa56cc7f81cc5b18b212d3641a500f3 SHA-1: cf0e1c3f67c573f911615a8fafaafc2384052103 SHA-256: 72206f67821854a9b49192936c2e0f8aeaeca2e26067e152b112049beaac7512
124 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs pointing to disposable domains, indicating it functions as a link farm. One of the primary URLs, 'https://gettraff.ru/strik?keyword=pillars+of+eternity+best+companions', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness, suggesting the document is designed to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/strik?keyword=pillars+of+eternity+best+companions In PDF document text
    • http://fiwodelu.everlastingrockministries.org/uploads/1/3/1/4/131437683/ce3c9276aa0b.pdfIn PDF document text
    • http://sizibo.lawn-jockey.com/uploads/1/3/1/3/131379956/8fd5f51023b47b.pdfIn PDF document text
    • http://files.culverleygreen.org/uploads/1/3/1/4/131436991/bozewinox-sekenivavovu-posexukefavetiv-tosuxerapam.pdfIn PDF document text
    • http://momolu.caravanoflore.com/uploads/1/3/1/3/131380767/xadedabeka_koliri_rilukov.pdfIn PDF document text
    • http://files.mycentralparkwest.com/uploads/1/3/1/4/131483069/natamovufowuf.pdfIn PDF document text
    • http://files.intensemedia.com/uploads/1/3/2/8/132815793/936766.pdfIn PDF document text
    • http://files.thecheekyfellow.com/uploads/1/3/1/3/131380625/9085819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eec86796-2a04-4a3a-b6a0-faad7fb0e16e/89831786620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c635bf-5c40-4b15-9316-a2d59f5684ba/92821748278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fca9f9fa-5923-4b58-8a88-717fb357a131/molozumebid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb689f1-b75a-43c7-b0eb-e4c41d804611/likejovemananevol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0175/9909/files/lane_recliner_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/wisafodinulukotabixer.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7F 5404 bytes
SHA-256: 7da6c69007d5d14a9717550c6e505ba070c1c8a38de4dab48fde91cb3da4490b
font_01_sfnt_off0000ffd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD6 10420 bytes
SHA-256: e73d318e617831454e5150096e15fb49910c5569f10f6d04744cd1a4ad285f88

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