Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67729bebfa36294…

MALICIOUS

PDF

78.7 KB Created: 2021-04-22 12:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 494a370a87b7ed13fc8a03ed17e66dd4 SHA-1: 6d75137a890570595536168351a22bf3e28a6378 SHA-256: b67729bebfa36294c17e1d68d4c23893aa62273a299383450b4ea669739272bf
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by a machine learning classifier and ClamAV as malicious. Heuristics indicate it uses an advance-fee scam lure, common in phishing campaigns. The embedded URL likely leads to a malicious site designed to further the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://xezojetit.ru/strik?utm_term=char-broil+tabletop+gas+grill+instructions
    • http://lnstagramcopyrightmanagement.com/85933577186pck0r.pdf
    • https://static.s123-cdn-static.com/uploads/4409621/normal_60053b3d22097.pdf
    • https://cdn-cms.f-static.net/uploads/4481518/normal_60628dd49ebbc.pdf
    • http://baltika-trans.com/jeep_grand_cherokee_2016_manual9f2ur.pdf
    • http://basiditdcf.space/bls_textbook926tc.pdf
    • http://tizezs.xyz/can_you_live_stream_from_propresenter55pw0.pdf
    • https://cdn-cms.f-static.net/uploads/4374364/normal_60107672ed8c2.pdf
    • http://formverifiedbadge.com/power_i_football_playbooknz4w2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sisaxu/44003498998.pdf
    • https://uploads.strikinglycdn.com/files/fd6db71e-2555-4bc4-bc95-8c075ec6d068/7040519376.pdf
    • https://s3.amazonaws.com/podawakumepewez/gifiginurasegafip.pdf
    • https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_ecc76efea182402389842dc46990b5f5.pdf?index=true
    • https://53f03ce6-db0b-4f41-9bfc-6956ba41e1f4.filesusr.com/ugd/727e0f_2d4175a768634e73a103ac1f415d8531.pdf?index=true
    • http://nonepajurela.rf.gd/barnett_quad_400_crossbow_limbs.pdf
    • http://vigevelo.rf.gd/administracion_de_empresas_libros_gratis.pdf
    • https://2863666b-9d79-467d-9aad-9eeb6dafbdf2.filesusr.com/ugd/6ee3eb_65568af8ec7d4062b413c971ba3ff4f1.pdf?index=true
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_329a4276f67a47ad969850a5faea277d.pdf?index=true
    • http://vobonosad.rf.gd/metabolic_disorders_of_lipid_metabolism.pdf
    • http://lavavil.rf.gd/film_tomorrow_when_the_war_began_2010.pdf
    • https://uploads.strikinglycdn.com/files/e338d73b-884b-464d-a736-0ae323aac284/34737341790.pdf
    • https://41be308f-8a64-4dec-8b30-4937605be974.filesusr.com/ugd/f042fe_8cb888a5e3c4499fb8bc6ddcd127c94f.pdf?index=true
    • http://xagevudogitoti.epizy.com/33222431164.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e569.bin
3fa9f8bad094b0cdb92f194d425a623a6b31abe555486dc39b0716710d0a45aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE569 5272 bytes
font_01_sfnt_off0000f759.bin
9c6a2e335e519d3e9d250109e7a7f55ba8fc8c9e791a11e37929cec0c2816df2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF759 11272 bytes
font_02_sfnt_off00011da6.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA6 4324 bytes

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