Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e226c85ad866702…

MALICIOUS

PDF

96.8 KB Created: 2021-04-03 05:35:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6a235f12e99268857c141f0f041c2a36 SHA-1: 574ce51b7cbbbdfe90529a6b4726de8ca4d0c7a8 SHA-256: 0e226c85ad8667024945147958fd1cbabda9f9ef1d706db124657d2c6c81f0c2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://golowaki.ru/award?keyword=halo+bad+blood+pdf+download PDF link annotation
    • http://serdyukov.pro/carbono_14r49ys.pdfIn PDF document text
    • https://lupexepiw.weebly.com/uploads/1/3/4/3/134318885/tikexugov-pigewiwox-jipin-xiduveke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_605ef958f1b49.pdfIn PDF document text
    • http://remont-kholodilnikov.website/wavovumiwiwadubodub4wpcj.pdfIn PDF document text
    • http://verifybadgehelp.com/boy_scout_christmas_tree_lot_vestaviangw14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455406/normal_5fe3c329c1778.pdfIn PDF document text
    • http://alexandreablog.com/xodebepofopuwedazozum4yls6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387582/normal_6002526c6de78.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/fhbmGgf/hunting_bigfoot_monster_hunter_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/Z5hqRje/xafixol.pdfIn PDF document text
    • https://lasuresupaka.weebly.com/uploads/1/3/2/6/132683400/b0ce21566c98f9.pdfIn PDF document text
    • http://tomogorman.com/66761424507wl58m.pdfIn PDF document text
    • https://zugasemoz.weebly.com/uploads/1/3/4/5/134593751/sigexojinotof-debopebaxo.pdfIn PDF document text
    • https://cdn.sqhk.co/bodevoposuji/hiC5ghd/feisty_greek_norwood_delivery.pdfIn PDF document text
    • http://barberking.best/waviwibosakotolalumotewu49jub.pdfIn PDF document text
    • https://xewixubigikuj.weebly.com/uploads/1/3/4/8/134892453/xepazelaxis_radami.pdfIn PDF document text
    • http://fastpeysistem.online/how_to_maintain_your_outboard_motor6maxq.pdfIn PDF document text
    • https://fuzimisadu.weebly.com/uploads/1/3/5/3/135319831/jivomeziwujive.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/xamapebonijos/light_reflection_and_refraction.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/casio_baby_g_bsa_b100_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/anaconda_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/90884359115.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/bejugotanikewemupidelawed.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_off000137ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137AD 4952 bytes
SHA-256: fc3e46c5526492c14ce0275b816b9f3980708fdd9080bc76c09d2e8707a6918c
font_01_sfnt_off000148a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148A8 17128 bytes
SHA-256: ed0fcbd8ebca4fa42ed14594deaf44d56098392a522f1a2e48a1d16e6e926413

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