Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c9d1a0265e24ed…

MALICIOUS

PDF

72.1 KB Created: 2021-03-15 10:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: c7ae5b2c6fd821f637797ceeb3cd04bc SHA-1: 791aef49027cc3f46b542b5dc620696c0d048eb1 SHA-256: 46c9d1a0265e24eddf61fc9109587d9677f3ab0005a44b2c9f09b16d52af3c5f
134 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm on disposable hosting, suggesting an attempt to distribute malicious content or phishing pages. The presence of external URIs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://maypoin.ru/award?keyword=filmmaker+magazine+pdf+download PDF link annotation
    • https://dipakinujudisil.weebly.com/uploads/1/3/4/4/134468351/622dbfcd3bc6fc3.pdfIn PDF document text
    • http://cosmicgig.com/astrophysics_for_the_person_in_a_hurry_audiobookmznj0.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/jihfigH/megisupotatagisuguge.pdfIn PDF document text
    • http://storedubai.shop/emergency_meeting_giflbbwn.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/csPmAkH/dused.pdfIn PDF document text
    • http://kersita.fun/ragozaditeserufiselijfvlz7.pdfIn PDF document text
    • http://devicesprotectionforusers.site/2005_cadillac_cts_transmission_for_salehiwbz.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/rabeserodejosogo.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/eHmzPLb/call_of_duty_for_ps4_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/zimidenex/Hihd9hc/laser_overload_mod_apk_unlimited_money.pdfIn PDF document text
    • https://gozaperirij.weebly.com/uploads/1/3/1/1/131163841/gigusowijudimebamuro.pdfIn PDF document text
    • https://bagerukuvimi.weebly.com/uploads/1/3/2/8/132815916/letakigikit.pdfIn PDF document text
    • http://fidekeleko.medianewsonline.com/mera_bhola_hai_bhandari_lyrics_download.pdfIn PDF document text
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/bobusavilozevox.pdfIn PDF document text
    • http://manibupefif.mypressonline.com/50_essays_that_worked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424029/normal_600a902173b05.pdfIn PDF document text
    • https://xasuzetevoke.weebly.com/uploads/1/3/2/6/132681443/8153473.pdfIn PDF document text
    • http://tameeniraq.com/honeywell_wifi_thermostat_manualjfzve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500895/normal_5fda74e5bd9f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pekowob.onlinewebshop.net/bojuwegot.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_off0000d9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FC 5344 bytes
SHA-256: 8adb9eb554185c0f725246a0499490179c00099b51054bbd5b9f43f4c1c95ee1
font_01_sfnt_off0000ec32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC32 11344 bytes
SHA-256: 5c098a72a9b925c787f75d2c38c051cf4c6dba3bb76f4a42dbdf3e3f642cd884

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