Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa701fafa1ceb6a0…

MALICIOUS

PDF

77.9 KB Created: 2020-12-07 07:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 366387035cafc22cc84d11d1a15f58ad SHA-1: 76e925ec8507c661c3f9c8933d01a816a8485362 SHA-256: aa701fafa1ceb6a0c97c201121298bd377ec6714a01dfac98c480106c71480d2
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a high-confidence ML classification. The embedded URL, https://traffmen.ru/strik?utm_term=water+monkey+king+buff, is identified as a malicious redirector. While no scripts were explicitly extracted, the nature of the PDF and the malicious URL suggest an attempt to redirect the user to a malicious site, likely for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/strik?utm_term=water+monkey+king+buff In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_5fb6bc13305fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421200/normal_5f98c3bd2167d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384296/normal_5fa83c230d97d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386073/normal_5f907cc929bc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452594/normal_5fbfcd58b7910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453134/normal_5fae72bee2d85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_5fbeca3d31cdb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc55556bdb33045eedfa18c/t/5fc6f7cce2dcb1274de26a76/1606875084324/tiki_taka_vamos_goa_song_lyrics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc585d61c8c741314514ea4/t/5fcc59dca87f9f1b19cf2bb2/1607227870178/legacy_of_dead_empire_walkthrough.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c1569955c744b55ca17f/t/5fccdc3524c49707d31e9734/1607261240288/reversibility_examples_in_sport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86913ec1-7939-41f4-b7c4-e8b20bc0f0d6/operative_dictations_in_general_and_vascular_surgery_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3a89988c99b6d37b8817f/t/5fc59d4c173fb5383b64ab76/1606786381212/incubus_drive_chords_ultimate_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6cbb608-4afd-454f-a837-05abed241af6/world_conqueror_3_apk_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5289b5-73d2-4d6b-a436-174755c2e7ad/82044121791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0efec46-8bea-44da-b32a-eadbeca78b29/jozipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e775f52-03ee-455b-8998-47262bc32379/enhanced_drivers_license_michigan_vs_passport.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/26861981773.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8C 5196 bytes
SHA-256: 5ab14aef976106dda8e5d6a6e8f8283180498632b4ade1af0cf53a284a2dbf66
font_01_sfnt_off0000ee47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE47 10820 bytes
SHA-256: be6e91fcdd3097afd072448493bd50dc83877bdc95e9938109c67820ca6055af
font_02_sfnt_off00011395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11395 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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