Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc01961ebdc7f82…

MALICIOUS

PDF

73.5 KB Created: 2020-11-24 05:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0e7d6d91b24237c0c6684eeb92036b6e SHA-1: d72b058ae185dd1c2cff9d8851aaa1f66cbd7c9d SHA-256: 1dc01961ebdc7f828f6a1e6435c4c783af625d39eda238d3a304ab816b9d1db4
202 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a link to a known malicious redirector, 'https://traffmen.ru/strik?utm_term=virtual+dj+free+download+full+version', which is designed to lead users to harmful content. The presence of a 'Security Bypass' heuristic suggests the document may instruct users to disable security measures, further increasing its risk.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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
  • 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://traffmen.ru/strik?utm_term=virtual+dj+free+download+full+version In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/geradi/video_editor_tanpa_watermark_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daa842aa-cea2-405a-ae32-6c61ab11b45e/slope_free_games_66.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284c437e-3ed8-4075-a368-ad43781f6e60/buwovavizitojunizetekor.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/werexibivibixuvenikako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da6ea723-a1db-4a8a-9543-7027f60cc51a/pebble_time_round_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/99093676652.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/bones_season_6_episode_9.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/tujovikixebupupoxugak.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/41404076184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb457f5-9b98-4f65-99aa-4072e574798f/enthalpy_of_reaction_and_calorimetry_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/sandstorm_warrior_cats_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/horse_racing_terms_betting.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/koropikukepewaf.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC944 4976 bytes
SHA-256: 85d7a055a0c14b8b383635e3cafdee79839795a3cfc0c243775209fe69c0c36a
font_01_sfnt_off0000da54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA54 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000e2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E2 11632 bytes
SHA-256: d76b37a95791ebbefc510ec6e7d029e4bf0cd9aa3acb1ff12a2616341883dc05
font_03_sfnt_off00010a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A43 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f