Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b9c6da7ffe29fa…

MALICIOUS

PDF

73.7 KB Created: 2021-03-12 12:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: b938b39d2566464091f9272482b091de SHA-1: ee99b343bc63efeca3c1a863b22ad7e8d8a003ea SHA-256: d0b9c6da7ffe29fa60bf97399c317b4cee90e8128eb10d2b45084100494f9f94
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL points to 'dafemum.ru', which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/wix?keyword=neon+angel+cherie+currie+pdf In PDF document text
    • https://cdn.sqhk.co/waxipefimafa/mOihWhf/nipiwori.pdfIn PDF document text
    • https://cdn.sqhk.co/rorifugera/AigjcJW/divarty_fort_carson.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417995/normal_603f2317b8966.pdfIn PDF document text
    • http://tatuxuvoziparu.mywebcommunity.org/stihl_ms_250_vs_251.pdfIn PDF document text
    • https://cdn.sqhk.co/xoguvamev/TAgREjg/zombie_outbreak_response_team_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/cnVPjcW/stick_with_it_game_speedrun.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/ySia5jb/chrome_web_store_extension_for_android.pdfIn PDF document text
    • http://volalagokiva.sportsontheweb.net/brother_2270dw_settings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530457/normal_6044752ff3209.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420459/normal_5ffd1aec8cf7a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d49d53c-7ac4-417c-bc83-887ff0d519cc/bic_f12_vs_klipsch_r-12sw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e06a10-d0af-469b-a31b-b4798b35d159/nepisonipuwosifulom.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/36083982663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e7ad00-6691-489b-869d-ca6f737205b4/how_can_life_be_made_perfect_in_short_measures.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/josejanase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ece52551-1355-4b4b-9a60-a96d8d87411b/90812352969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49448d27-2825-453b-a211-612259078b8f/numodapamitezufepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8426fb96-a959-4706-a542-cab317ed0949/que_requisitos_se_necesitan_para_sacar_la_doble_nacionalidad.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/tavojobitewubovut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41280cb-fdf4-4aea-937c-b3d9161e5178/21387408465.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/absorbing_information_synonym.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_off0000e4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E8 5208 bytes
SHA-256: 29b11aaea0d3d46392e42f54653d3a65ba3ceb54be380344aa8efbe2939ffea8
font_01_sfnt_off0000f6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A0 10184 bytes
SHA-256: f2baf5cdcf436c6b0ba00ec005a2ea173dbfb8b004c68b84bf72c3c834629b38

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