Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6daffd97cdc9be…

MALICIOUS

PDF

81.9 KB Created: 2021-03-02 18:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d79d2939c71746177ce6b05b043d1b5f SHA-1: d86eaeaf1861110080856526115660b609d29489 SHA-256: ff6daffd97cdc9bea7de7a6df04f52902cff90119fb0433287a34a369ccb1f9c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous links to disposable domains, suggesting a link farm designed to redirect users to malicious content. The embedded URLs likely serve as part of a phishing or malware distribution scheme.

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://bologen.ru/strik?utm_term=how+to+study+for+ies+civil+engineering PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493602/normal_5fef4f156be97.pdfIn PDF document text
    • http://bilkan.fun/80013917988gggnq.pdfIn PDF document text
    • https://pupizotewijuguw.weebly.com/uploads/1/3/0/7/130775862/0c53941e1e.pdfIn PDF document text
    • http://stonersfranchise.com/18625492192fc3zt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477400/normal_601fd1a81e8cd.pdfIn PDF document text
    • https://zojivevu.weebly.com/uploads/1/3/6/0/136090852/f1a3e.pdfIn PDF document text
    • https://kuwupixunipava.weebly.com/uploads/1/3/3/9/133986845/talaja-velibisovakopex-bibekemije-pomifud.pdfIn PDF document text
    • http://lamovingcompany.com/smashers._io_fun_io_games_mod_apkv64r2.pdfIn PDF document text
    • https://fanazogi.weebly.com/uploads/1/3/0/9/130969494/8784de354caf8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487623/normal_6036a6a103a4c.pdfIn PDF document text
    • http://dovamemowiruz.iblogger.org/fibupuviwobeben.pdfIn PDF document text
    • http://xadebiwivupogof.iblogger.org/popapisikimorilinatu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_60191e96344aa.pdfIn PDF document text
    • http://buxuzexutotuf.22web.org/40387990836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476127/normal_6035410fa98be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487647/normal_601464cabb655.pdfIn PDF document text
    • http://sluzhba1.net/fasawelaiy8.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/dakebesuvum/medical_bills_credit_report_massachusetts.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/jam_turf_portable_bluetooth_speaker.pdfIn PDF document text
    • http://kubuxakul.epizy.com/85841076677.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/pufaxajevav.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_off0000f533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF533 5076 bytes
SHA-256: 81ec1fbd8e57ac0d6f326fd59a4a6c353b9b67a076b0dc81289ffd67d9507d3b
font_01_sfnt_off000106a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A0 11332 bytes
SHA-256: 85973ca84b28039d171236a8c78679652ee5683cc38247b86724d8564fb5d2c4
font_02_sfnt_off00012c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C0A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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