Malicious PDF — malware analysis report

Static analysis result for SHA-256 9808f1bdb8784d4b…

MALICIOUS

PDF

79.1 KB Created: 2021-04-03 07:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9855d18931926718b123d19887236499 SHA-1: a7d609c6b3d7e6ed0de34bef4cb68bbf5a65dc70 SHA-256: 9808f1bdb8784d4b30e077ce94a352b1138ac34d615f34b80ad2d25ca855383e
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF document exhibits characteristics of a phishing lure, specifically a fake CAPTCHA, designed to deceive the user. It contains an external URI pointing to a suspicious domain, likely intended to host malicious content or collect user input. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?utm_term=yahoo+mail+recovery+form
    • http://lumobumekola.getenjoyment.net/cartesian_philosophy.pdf
    • https://tonirifiw.weebly.com/uploads/1/3/4/4/134468227/2378276.pdf
    • https://cdn-cms.f-static.net/uploads/4444884/normal_603115fc4002b.pdf
    • https://cdn.sqhk.co/nufesewepi/gdggWpm/healthy_diet_plan.pdf
    • http://ruxenawuxovogu.getenjoyment.net/bupobelewigozaz.pdf
    • https://cdn.sqhk.co/moromasi/jbzS6Ls/light_meter_for_plants_reviews.pdf
    • http://leledup.mypressonline.com/85057911335.pdf
    • https://static.s123-cdn-static.com/uploads/4380675/normal_5fe4d83628bb3.pdf
    • https://cdn.sqhk.co/viwiratoposu/ahfdjbT/90449433678.pdf
    • https://jimutovila.weebly.com/uploads/1/3/1/8/131856698/dewosakabofesik.pdf
    • https://cdn.sqhk.co/zabitokepum/UiaifGO/kifaxavisukotas.pdf
    • https://cdn.sqhk.co/bexefoboxevi/gigk50A/winking_lizard_tavern_near_me.pdf
    • https://cdn-cms.f-static.net/uploads/4445320/normal_605dbdd85640f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fujadabez/cppc_public_company_limited_annual_report.pdf
    • https://uploads.strikinglycdn.com/files/d84d41b6-c82d-4c38-917a-bf4fe8c41dd4/fixis.pdf
    • https://s3.amazonaws.com/juzinaramip/14389391708.pdf
    • https://s3.amazonaws.com/benuka/tencent_game_plattform_china.pdf
    • https://uploads.strikinglycdn.com/files/1e55de1c-9f4c-4d4f-b9bd-4391f35625c0/kuvaxajukogafapesobizil.pdf
    • http://xidalagep.myartsonline.com/35147712194.pdf
    • https://uploads.strikinglycdn.com/files/291c39e4-921d-497c-9176-eef1affe0060/books_like_far_from_the_tree_robin_benway.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f819.bin
373af453ee34f08129e4d0545281fd5d42531d64c43055e7ba24b04cd61a22ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF819 5064 bytes
font_01_sfnt_off0001093a.bin
746b50ae252d09991b7d6a79ee13add274c79fbf3063cfdac6c7dbb6dc8de2a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1093A 10792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.