Malicious PDF — malware analysis report

Static analysis result for SHA-256 391673c2e3775874…

MALICIOUS

PDF

40.8 KB Created: 2020-10-13 02:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 397cf93a1c319710a18a0e9f53756052 SHA-1: 747ec22deb5d0c75001ef28125acc0f4ecc2c5ac SHA-256: 391673c2e37758749b28949f7f6c391a0691821db825c9f6dd2d1b7e3d075d7a
184 Risk Score

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.
  • 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://cctraff.ru/strik?keyword=jaguar+xjs+owners+handbook+pdf In PDF document text
    • http://files.mayaabasketball.com/uploads/1/3/1/6/131606056/7344500.pdfIn PDF document text
    • http://files.jelliegoedhart.com/uploads/1/3/0/8/130873717/dilux.pdfIn PDF document text
    • http://files.croissantandcovenice.com/uploads/1/3/1/4/131438825/602816.pdfIn PDF document text
    • http://files.colinjbartley.com/uploads/1/3/1/3/131383330/6746220.pdfIn PDF document text
    • http://linedemom.pennywinn.com/uploads/1/3/1/8/131856369/lofunif.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/dubojojirugudidufo.pdfIn PDF document text
    • https://site-1037044.mozfiles.com/files/1037044/zerovuzusekesafipobununu.pdfIn PDF document text
    • https://site-1039992.mozfiles.com/files/1039992/95559691611.pdfIn PDF document text
    • https://site-1038882.mozfiles.com/files/1038882/fuzibipurakef.pdfIn PDF document text
    • https://site-1039921.mozfiles.com/files/1039921/96247117247.pdfIn PDF document text
    • http://linasez.ohlimousine.com/uploads/1/3/2/6/132682347/4316496.pdfIn PDF document text
    • http://files.richmondshiremusicschool.com/uploads/1/3/0/8/130814475/3374877.pdfIn PDF document text
    • http://kepuluj.jda-tele.com/uploads/1/3/0/8/130874601/rixajuremolu.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/1/0430/0872/1049/files/community_service_essay_conclusion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7241/3079/files/skyrim_stony_creek_cave_waterfall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0746/6398/files/19741230800.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_off00005e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E64 5700 bytes
SHA-256: f11e775d676afc0deac8cc685fe88551269a84cf3c3ca03da8fb7ffa6a1db757
font_01_sfnt_off000071dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 10748 bytes
SHA-256: 87483a9368b0143bbf141a357a2ca3e1a9047080c11eb3ea9c0f61f59c58c6b0

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