Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f82de9b17bf1324…

MALICIOUS

PDF

75.9 KB Created: 2020-12-26 12:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 808e0efd53428dd0e5afe40e769c3617 SHA-1: 7a1bd0ef7bde82dc166ca422530aa910c3ca31da SHA-256: 6f82de9b17bf1324466007dfaa17b178b0df6a27a904eeca44c9b92a3e1c3f14
214 Risk Score

Malware Insights

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

This PDF document contains a link that redirects to a known malicious domain, identified as a redirector. The document also hosts a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The presence of a malicious redirector link indicates an attempt to lead the user to a harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=funny+law+trivia+questions+and+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4460228/normal_5fd78ad9491e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_5f8ecc94abd0c.pdfIn PDF document text
    • https://dapavivilo.weebly.com/uploads/1/3/4/8/134895477/nugapenosapelununozo.pdfIn PDF document text
    • https://pozimifekof.weebly.com/uploads/1/3/4/6/134674510/c2e539f6a69b.pdfIn PDF document text
    • https://noginoludaven.weebly.com/uploads/1/3/4/3/134374582/rupove-simoridis-xijirogod.pdfIn PDF document text
    • https://cdn.sqhk.co/kepebeso/iejhOjc/asphalt_nitro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/navezige/1TjbjhM/56897946346.pdfIn PDF document text
    • https://pesasujax.weebly.com/uploads/1/3/4/8/134882000/donizot.pdfIn PDF document text
    • https://cdn.sqhk.co/rapavuse/RNZcpAR/wolatufotivozum.pdfIn PDF document text
    • https://cdn.sqhk.co/bopesajan/Hgeyyib/very_little_nightmares_walkthrough_level_12.pdfIn PDF document text
    • https://cdn.sqhk.co/risevejuxik/RXRELvH/online_photo_editor_change_background_color_image_free.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/4c85b381-7108-4825-a036-6500a8451141/Britse_Open_startpagina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7bd10c2-f3cb-4af5-95cf-f811294206a6/devils_arithmetic_movie_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/279911e8-e404-4997-8b64-b4f24f90b5f0/bugetedijabubelenamimepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08af75bd-bcd5-4f3f-b76e-1a6d0060a398/kifevegalawobawigisuziv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f67e858-18fa-4f2a-b86d-87283e1912a2/ucla_math_32a.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_off0000eda7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA7 5152 bytes
SHA-256: 2b0e07928500c552eb4d878cfabf352635ae2772c98ef9f6e24583e93a72f7e2
font_01_sfnt_off0000ff5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5A 10296 bytes
SHA-256: cfdefc4f02686705e27759dafb731da2368d4d841fcf3f8a21b9b138e72ae88e

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