Malicious PDF — malware analysis report

Static analysis result for SHA-256 99a6cb662349a4bd…

MALICIOUS

PDF

63.2 KB Created: 2020-11-10 11:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 650ac37fbbac504787b609eef275bbb1 SHA-1: 171792807efe0980d7885fd8844344f5b9fe49e8 SHA-256: 99a6cb662349a4bd9ae29f44d8c63ead0ef401e7ace6e43bb401dbbf083f90ec
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/strik?keyword=sun+dolphin+american+12++jon+boat+specs'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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://traffking.ru/strik?keyword=sun+dolphin+american+12++jon+boat+specs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f87689e685df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376619/normal_5f9a9de65ffff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_5f9bba3be5e8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f91591ee1df3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f8e4b9531d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387562/normal_5f96ff2ddeca8.pdfIn PDF document text
    • https://womufotijomagew.weebly.com/uploads/1/3/4/3/134351515/79785.pdfIn 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://uploads.strikinglycdn.com/files/99d6f9c9-9219-40a7-9a7a-7efff1c8d9a8/30807507680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9a9b78e-8505-4d44-9933-1e7927e310f8/31145489046.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/battle_of_the_labyrinth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e17bae0e-fc9b-4331-9285-e58f8671cd93/78281466194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1efe4abe-234c-4c9c-a8fd-007f1b7a7838/adhisaya_mooligai_vasiyam_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1221bfd8-fdd2-4a90-89f0-ccfca6b5e743/70679801249.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_off0000ac28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC28 5700 bytes
SHA-256: 6aa1e605db2e66aa74465fa342d0bcdca99b266502983585b7ac5ab2350c5170
font_01_sfnt_off0000bf4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4D 10236 bytes
SHA-256: df24c944c942dd7847ee54b68d4ed5080b1dc1abc3d2b4d353113d9e07df8ba7
font_02_sfnt_off0000e1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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