Malicious PDF — malware analysis report

Static analysis result for SHA-256 f83a968e005c4153…

MALICIOUS

PDF

49.7 KB Created: 2020-11-09 05:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2a8638c45e5a7ae5a0ea559367bfc368 SHA-1: c7baab9f2499a04b65f8f0eddb50e28e811c1dc6 SHA-256: f83a968e005c4153a899abe4e9c2da33ee68b15d1e4389a34e871d6686c0e3aa
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=honey+baked+ham+nutrition+guide PDF link annotation
    • https://dufevirefat.weebly.com/uploads/1/3/1/4/131438490/tanal.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/1e7e9f5fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_5fa63c279b35d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463002/normal_5fa43c555a9fb.pdfIn PDF document text
    • https://pisefipekopaz.weebly.com/uploads/1/3/4/4/134461515/3112869.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418746/normal_5fa2087778332.pdfIn PDF document text
    • https://gaxopekel.weebly.com/uploads/1/3/0/9/130969853/nemamaliz.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/8534458.pdfIn PDF document text
    • https://pamuvomamutafa.weebly.com/uploads/1/3/4/3/134305197/zemotosifo-mufaji.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/difiruz.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/af891846-b810-4836-9f5c-28d6dce20afb/nokuwuguzovutafirixizaxaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/tafubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6742ddf6-60cf-44db-b02c-6853aaca97d7/97997783957.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009278.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9278 22896 bytes
SHA-256: 96ca359562925ef46a88e72ad12e4f70abbfd22c25dba6ba3a0c8c902a85cd3f
font_00_sfnt_off00005d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D11 5296 bytes
SHA-256: e8f7f4779e27b3633b407923325094d428cef4bb11410a1aa4bf12ebbca29c24
font_01_sfnt_off00006ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 10352 bytes
SHA-256: f0fd6f7f103b36a1cc895e730073b7bcd6d09885cd0ecd406807bff4158bc86a

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