Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a50e74503f916fe…

MALICIOUS

PDF

71.2 KB Created: 2021-03-09 09:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9d7f504eb38e1a8d4e943ffa281259f3 SHA-1: a91ff432ee026da7450c82c9ba952c0243375ca7 SHA-256: 5a50e74503f916fed4f5a8297bd11993593caf8cf2c3ccae21d3be411ce92cd8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/wix?keyword=boston+college+activities+fair PDF link annotation
    • http://blockingscenery.com/762266799503jau5.pdfIn PDF document text
    • http://tixshopclub.space/930079074508icir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5fdbd7bced9fe.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/focusrite_2i4_vs_2i2g7ui1.pdfIn PDF document text
    • http://on-arenas.com/is_hayward_bart_station_safeonqdo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446649/normal_5fc616532063f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418191/normal_60025e78b570a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417992/normal_5fd259816d8d1.pdfIn PDF document text
    • http://geesecam.com/9008775528060ib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://0879403c-3be5-48e4-925f-21334a7d5cfe.filesusr.com/ugd/407fcc_6be91b04639843b18e46a7647e398659.pdf?index=trueIn PDF document text
    • https://3dd85f33-233b-4b3c-8e53-142bc8307eec.filesusr.com/ugd/8df890_e839c5d45d0343ba932c419f2adf1741.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/wurulenoka.pdfIn PDF document text
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_bec39a047d644db3aaeb34b521e2e1d0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/aumento_de_masa_muscular_nutricion.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/utorrent_android_not_starting.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/xodadubole.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/45664897767.pdfIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_c346d0076daa4ab7bb9bf87f8090d288.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/kagapowajaxibijalujavun.pdfIn PDF document text
    • https://28932ed2-21d9-4123-99cb-fcff0aac4472.filesusr.com/ugd/cc089a_df9be27e51fb4759892a04f2c4763e74.pdf?index=trueIn PDF document text
    • https://2559d30b-64cd-4b4d-aaad-e76a675dde99.filesusr.com/ugd/f5a024_8f79423dba2448b7840494d606d16909.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAF 4948 bytes
SHA-256: 33ff6bb481f4bc6382eb713773716606850c9952bef6b980fd6dd23ba12d2275
font_01_sfnt_off0000de95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE95 10196 bytes
SHA-256: e311889375203145a163d5f4f88708e9cddd5fa13dffe3ae263ee5aeaa2e01ca
font_02_sfnt_off00010177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10177 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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