Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf801767272dcc5…

MALICIOUS

PDF

72.7 KB Created: 2021-02-08 00:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8c13d8438bf7c282cab9ce11ad2000ff SHA-1: daf41ce5e883329573b316d26ea23a795afbabd5 SHA-256: abf801767272dcc593e521db22b07bf6dc9eb4810bd313f95718428cc8a6875d
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is likely a phishing domain. The heuristic 'SE_URGENCY_LURE' suggests the document uses deceptive language to prompt user action, reinforcing the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/aws?utm_term=sanford+antibiotics+guidelines+pdf PDF link annotation
    • http://odebayitrafikhizmeti.com/la_la_land_ukulele_chordskjmpe.pdfIn PDF document text
    • http://copyrightreports.com/vivid_seats_event_ticket_insurance5vkd7.pdfIn PDF document text
    • http://shimano-stradic.ru/revue_technique_tractopelle_mf_50u8rci.pdfIn PDF document text
    • http://afracheat8.xyz/nightcore_free_download_mp3wmhwy.pdfIn PDF document text
    • http://zhigina.ru/ritaleripabovofuu7hcs.pdfIn PDF document text
    • http://burrrhey.tech/79490922805n9kgj.pdfIn PDF document text
    • http://wide-take.top/download_apk_mod_gta_sa_android_v1.08eb6yg.pdfIn PDF document text
    • http://lavkavkusa.store/81561205402ylarn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495858/normal_5fd76d2f835ce.pdfIn PDF document text
    • http://1freedom.space/use_the_index_luke7k9k9.pdfIn PDF document text
    • http://differencecheats.net/rock_guitar_hero_songs19ygt.pdfIn PDF document text
    • http://natur-bio.space/lixax1xbtp.pdfIn PDF document text
    • http://deflecfcvy.best/thompson_chain_reference_bible_esvujnu7.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/74888860184nto0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remavuj/bose_quietcomfort_35_ii_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/structural_adhesives_chemistry_and_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/zeniv.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/childs_motorcycle_helmet_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/agneepath_poem_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBC 5568 bytes
SHA-256: 606391daa282adfde357a1c750a71e9bff53dd773bd59d0bd6dfd673692d19b6
font_01_sfnt_off0000efb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB7 11416 bytes
SHA-256: a0e924156c24db9d04c82ec993b35a11de72958b78c60351c94f81cd24b50f60

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