Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea171a90bb6904d…

MALICIOUS

PDF

87.5 KB Created: 2021-05-20 04:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 99de2b95cc4672db3c14762112221f6f SHA-1: e1601b49105f568538c2a803b3e2d98942c1a971 SHA-256: 0ea171a90bb6904d0525d2210fe0f2c7c746717b9b8d79e2ca1324c2058824cf
276 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier. It contains numerous external links, with a specific lure impersonating Facebook to phish for credentials and recovery secrets. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the presence of phishing lures and a large number of external links strongly suggests a credential harvesting or scamming operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • 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 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fimudelowuj.weebly.com/uploads/1/3/1/4/131455024/rotapiniril.pdf.
  • 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://bologen.ru/strik?utm_term=pirate+kings+free+spins+crazyashwin PDF link annotation
    • https://fimudelowuj.weebly.com/uploads/1/3/1/4/131455024/rotapiniril.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370270/normal_5fe0eeefb95c6.pdfIn PDF document text
    • https://kobizixudowizeb.weebly.com/uploads/1/3/4/4/134402546/beniv.pdfIn PDF document text
    • https://magifoxokepo.weebly.com/uploads/1/3/6/0/136053300/1693008.pdfIn PDF document text
    • https://pewofofuvalok.weebly.com/uploads/1/3/0/7/130775386/0f16040e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366668/normal_5fe1a29dea9ee.pdfIn PDF document text
    • https://xagogijan.weebly.com/uploads/1/3/4/7/134720006/2423025.pdfIn PDF document text
    • https://zosolino.weebly.com/uploads/1/3/4/6/134676828/nupoza.pdfIn PDF document text
    • https://juzumefewuw.weebly.com/uploads/1/3/4/7/134766708/2166067.pdfIn PDF document text
    • https://bawenijujobafo.weebly.com/uploads/1/3/4/6/134670929/2074197.pdfIn PDF document text
    • https://mateboxabivof.weebly.com/uploads/1/3/4/7/134763458/66276.pdfIn PDF document text
    • https://jepemanek.weebly.com/uploads/1/3/4/5/134589705/bd52b01a0bcc4e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_6014e0fccb365.pdfIn PDF document text
    • https://gofegupozomo.weebly.com/uploads/1/3/4/4/134479888/32d0c3a4.pdfIn PDF document text
    • https://mitigovoponezix.weebly.com/uploads/1/3/4/3/134375948/933bcc74310.pdfIn PDF document text
    • https://zixojubagever.weebly.com/uploads/1/3/4/6/134613499/viforanapuza.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://s3.amazonaws.com/fosagoba/aeroplane_games_free_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/my_rca_tablet_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/discussion_example_lab_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e7d6bb-cdca-4a6d-be71-16a173cb320b/survival_games_pc_multiplayer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aaf2db8-2d20-44b9-9552-c227b0d50443/18712705610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e2a5dd-5b60-478d-987c-1771cb0e69f6/is_there_a_letter_j_in_aramaic.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/2007_toyota_camry_hybrid_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dacdb7d-bf93-4a4c-8eb7-7116ce7c2569/how_to_breed_eevee_crystal.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/lozanarefixatibonamiwawa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001085c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085C 5232 bytes
SHA-256: b859fc85068799871fc64c484a1b751880e4bafd9eb42304249c40521c491205
font_01_sfnt_off00011a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A39 11668 bytes
SHA-256: e16cc7c5280ff6dbeb20fc0a57357e4397bf6c3c98b1e906f7590c463032737d
font_02_sfnt_off000141fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141FD 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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