Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68b619df2b351ba…

MALICIOUS

PDF

69.7 KB Created: 2020-12-15 22:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6aa8bb95ccd67e98504265b7ef0a07cc SHA-1: 384e47515ecf564d9cf233255ee723b810d8bc52 SHA-256: e68b619df2b351bab253231badd3663d2e5984c28a7927618f9b01b02e5244ab
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafficel.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to an informational query.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=how+do+snakes+drink+water+in+the+desert PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412896/normal_5fa196da928ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485935/normal_5fbb4b421d54b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_5f8c4d94ca61b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_5f918f034b064.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/2bf2fdf0-898e-4c27-befc-c309723e87c5/runescape_chat_font_size.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58858ff13940aa25ef992/t/5fcbecf20814be4f73f7e2bb/1607199986985/42201961615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3427293a-9849-4803-9b09-e28534c67457/12026504743.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/extravasation_management_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7746b58a-6906-446a-a8da-947fd1836c30/berudeduloxim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1980ba50-9383-4b6d-a59e-ba65a3e50a16/48001874684.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5013e6d49a06bb886e2a/1606373395947/68225236011.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_off0000d388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD388 4996 bytes
SHA-256: b5fa9183f6b524f5fcd28cbfeb8508b9c634ab965f47c7bd3f518b1aff96ec13
font_01_sfnt_off0000e48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48F 10980 bytes
SHA-256: 83d8ab89baf09ae5e8d50cd795d9bc432342deeadb9754d28662c4cb431588b0