Malicious PDF — malware analysis report

Static analysis result for SHA-256 0368cdd5849817bf…

MALICIOUS

PDF

56.7 KB Created: 2020-11-09 14:50:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2417f6ac4ea7cd39d51e69485f8b26cb SHA-1: da3ad2b3ada254e6b074dcde8329e8d8a9ed8990 SHA-256: 0368cdd5849817bfc5bb8a77ebaf322293b7d7c1cb57dd1f0dca0920ac361b07
94 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://traffine.ru/aws?keyword=fl+tron+unblocked'. The document body, though heavily obfuscated, also contains this URL. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://traffine.ru/aws?keyword=fl+tron+unblocked In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5fa6b4c650fe6.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/c97f87fd-811f-4b97-b1eb-fd2e1a22436f/90350853678.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/robux_ads_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/61713502261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d0eec9-0b29-435d-887b-749794249c0a/mobil_1_filter_lookup.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/agricultural_economics_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/lifeproof_case_belt_clip_iphone_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/094cad2e-c321-4a2c-9c5c-94b02d24fac7/91024086673.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/85281997368.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/quartiles_and_interquartile_range_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb1b6c29-3ba8-40d6-892d-57378c4c574a/kajiroguwegovavafilekejef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b34aec7a-11a5-4b3d-9993-f112245faf97/jinozoranemo.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_off00009efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EFE 4704 bytes
SHA-256: 3f5b67470b447e996ec3614e246d58bdb608f027eb6ef9f76c85484c3b288ed4
font_01_sfnt_off0000af0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF0C 12316 bytes
SHA-256: 069a358d01647b72eac6cf131f46760b91d0666f742f4e348d35f5a18cc78d60

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