Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f2634e8fafbb7a…

MALICIOUS

PDF

79.5 KB Created: 2021-03-29 17:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9f1bb77023dea430762bc90b6a9e58e8 SHA-1: 9ba25d0933d4eeb251158e90a2e937d8a2bde1ee SHA-256: 70f2634e8fafbb7a6fc55cc64618eb7d31e517a51ad2745aa9f461c21930e3bd
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs and command execution tokens within the document text. The document body, though partially corrupted, suggests a lure related to 'campaign awareness PDF'. The primary malicious URL identified is https://jacksth.ru/award?keyword=exemple+de+campagne+de+sensibilisation+pdf, which is likely used to deliver a secondary payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jacksth.ru/award?keyword=exemple+de+campagne+de+sensibilisation+pdf PDF link annotation
    • https://cdn.sqhk.co/jogeguzotire/jahevpr/fa_game_virus_android.pdfIn PDF document text
    • http://xanejog.medianewsonline.com/biblia_de_estudio_palabra_clave_gratis.pdfIn PDF document text
    • http://kupiokno.su/windows_7_cmd_command_listfek09.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/bendy_and_the_ink_machine_book.pdfIn PDF document text
    • https://cdn.sqhk.co/kowumutajaw/fjbgeBj/3d_origami_star_paper.pdfIn PDF document text
    • http://itdiscount.info/50553699472oejmi.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.neIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/former_australian_cricket_team_captain.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/rizomaseb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a9b3558-55e1-4465-adbd-4db115f068a0/namalefoburudiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/1259033688.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/formel_areal_sirkel.pdfIn PDF document text
    • http://dezinolabebosod.atwebpages.com/91664078797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f15e1a78-0b6f-44a2-8aff-c4669b10a8e2/kojesudozaruwimusirugibo.pdfIn macro / runtime command snippet
    • https://uploads.strikinglycdn.com/files/99592ecc-cf1a-47b2-8e0c-9542c418a850/what_are_the_7_principles_of_effective_communication.pdfIn PDF document text
    • http://sadoboxijowem.myartsonline.com/aspek_keperilakuan_pada_etika_akuntan.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/amazon_mother_s_day_gift_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/46512111424.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BA 5544 bytes
SHA-256: f3e6d83bc7c772f4346f025963f55f8865b8cfdeabc34002d5f76a49229cef63
font_01_sfnt_off0000fa86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA86 1936 bytes
SHA-256: 246569b5fd7226bd0ebf3c016de7ba0bf82e996896d660a08030b2af0a08efd3
font_02_sfnt_off000103c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C7 14044 bytes
SHA-256: 1aa067870bcc0bd96bf2e2f3e57f079a26609269916bbcfc47f109460ae70bfa

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