Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e22f395ab1f0ce…

MALICIOUS

PDF

65.4 KB Created: 2020-09-30 20:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af57abf21e763f9cb76a5c7165dbe062 SHA-1: b89f649d99572127944dea6ffe3fc3aea76d3b4d SHA-256: 32e22f395ab1f0ce19cc2154b55b17d305f388afaeeca8ba60dc3509efb05614
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=introduction+to+acoustic+phonetics+pdf In PDF document text
    • http://files.jeffjensonmagic.com/uploads/1/3/1/4/131409098/587671.pdfIn PDF document text
    • http://files.thebrockenhursttaxis.com/uploads/1/3/1/0/131070342/gipow-toxiguxakovi-vefatig-zozuxonuref.pdfIn PDF document text
    • http://biremoje.ps106x.org/uploads/1/3/1/0/131070161/bc252522aa.pdfIn PDF document text
    • http://files.lovelocalnashville.com/uploads/1/3/0/7/130775245/9038fc12e3dc1.pdfIn PDF document text
    • http://files.clevelandpropshop.com/uploads/1/3/0/7/130740563/9802076.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/vulakufijotufukapexa.pdfIn PDF document text
    • https://site-1036950.mozfiles.com/files/1036950/tokazepu.pdfIn PDF document text
    • https://site-1036923.mozfiles.com/files/1036923/runegusuwa.pdfIn PDF document text
    • https://site-1036772.mozfiles.com/files/1036772/ruruteretovip.pdfIn PDF document text
    • https://site-1037081.mozfiles.com/files/1037081/21495580140.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/f9771d6b-f138-4c88-86e4-164e12b34c26/46398803392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86e789f6-5c2a-4455-958c-76dd8720dcbe/rokumoxuxogaroputujenitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697110be-be42-4765-9da8-479331f88400/geketejujodopamafuviji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0ab501-22f6-48b4-862b-49ae076e1246/fexilivijuledagafoku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cf6657f-4784-4d5c-9257-c952f533f5e0/24829566212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76e6fce2-c030-47f0-9ee7-65f924ee464d/19865733512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/664666af-a959-41b0-92b1-f28bbba2326c/wuzesexubuvejimixur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc9fc579-591a-4e6e-8b80-e51ae730b898/40383890002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/990265ef-36ba-4f4f-8058-c92cab5c9c1c/50663166754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a443d3-2a58-451b-bf1d-ad0489e8d5fe/tiredafejenu.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_off0000bf17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF17 5148 bytes
SHA-256: fcfade28ef1f1a3a588fde752d1ebe5bc939c7b59929a9c99e94db6ef5aced9e
font_01_sfnt_off0000d095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD095 12068 bytes
SHA-256: dc9525256cf31fd647f7ee167b7d2ec9ded8bcf7c49f783e4c2cae0627cda340

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