Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b38267189fe5c8…

MALICIOUS

PDF

84.3 KB Created: 2021-05-03 10:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5dc7b3964001605b317c7d388ec47a0 SHA-1: 718163762bfa1eeed8d9e5d52dedf77cc0fcb74f SHA-256: 76b38267189fe5c8f074a15b0fa3aadf01bd03a35ec4e35577f5a129477ab4ba
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains references to printer models and application names, suggesting a lure related to hardware or software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=hp+officejet+7110+wide+format+color+inkjet+printer
    • http://ses-paypal.com/81542287993lm80c.pdf
    • https://cdn.sqhk.co/gewanunu/bgciShe/download_apk_reposta_photos_videos.pdf
    • http://saxobupazes.sportsontheweb.net/how_old_are_the_riveras.pdf
    • http://limaxinsto.xyz/what_is_cyber_security_for_dummiesrgna4.pdf
    • http://mpvideo.org/fogituc3frv.pdf
    • http://1fps.ru/sejigekawilobejumoino2z.pdf
    • http://titanovyi-filtr.ru/what_are_the_types_of_system_designnuhw2.pdf
    • http://tufofol.medianewsonline.com/que_harias_si_no_tuvieras_miedo_curso_online.pdf
    • https://cdn.sqhk.co/setawigiz/ShiCF48/fakufatefituzavebepa.pdf
    • https://cdn.sqhk.co/xulawajikigi/ihi85gf/91445551599.pdf
    • http://vashe-zdorovie.xyz/sq11_mini_dv_camera_manual_cz6btq1.pdf
    • http://zhk-samolet-krasnodar.info/breville_juice_fountain_juicer_reviewsn2ucu.pdf
    • http://rakadan.sportsontheweb.net/mastering_autodesk_revit_architecture_2020_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kodabaguditu.rf.gd/definition_of_democracy_by_different_scholars.pdf
    • http://xiwozoget.atwebpages.com/vokobipiburimuxowopaf.pdf
    • https://b64dd490-e5b9-492f-89ff-e398ecee904c.filesusr.com/ugd/5926b4_891c094622ec4ed89889209c5a9f60d3.pdf?index=true
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_0177b74f4ac14d2995ee49e627dc983d.pdf?index=true
    • https://eac57977-2d4d-4dcd-ab9d-8ed153e3f194.filesusr.com/ugd/b0b521_b666190b09cf4063996b751716feb4b6.pdf?index=true
    • http://latilofu.rf.gd/define_information_asymmetry.pdf
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_0c3fc71b4d80401fb4f662acd149dc40.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd5b.bin
51b6919d4484f4623860e27fadebd36e537ea8012e6f0ff6eb7938e7154c47de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 5380 bytes
font_01_sfnt_off00010fa8.bin
8be106331e74e8d22f976b0c33ccda9a7d9dfc472b51e63163066f7ea432584b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA8 11052 bytes
font_02_sfnt_off0001357b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1357B 4324 bytes

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