Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ac7eb923d3131b…

MALICIOUS

PDF

68.5 KB Created: 2020-12-04 03:12:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 48a2db5007228ed532fc7eb0ae7a3eee SHA-1: 96ef0472ae2269a843661214b80922ddbdea9097 SHA-256: 22ac7eb923d3131bf3615a48e7b66af80c672cf4af076578fdbdaf47092ced78
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=e+natural+minor+scale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473926/normal_5fb2b5c09c263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_5fbd43c7b3fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446499/normal_5fa5b74ad8e13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451544/normal_5fc273de0484b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5fb87480b3929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450628/normal_5fb99792bea58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385230/normal_5f8f6d58ad4b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414864/normal_5fc0093fa91db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485161/normal_5fade7f04eea8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5f9a442284e68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_5fa552a96d8e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_5fafc020e6c8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_5fbe2ef2c8199.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/5fbce344be7cfc36344e8aaf/t/5fbf48fe3c02f22b9d035181/1606371583806/sd_stinger_bike_motor.pdfIn PDF document text
    • https://s3.amazonaws.com/juzerilem/works_cited_page_example_websites.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2189145a8629dc79a903/1606295946020/the_art_of_parenting.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/52486375503.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_off0000d1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CB 4904 bytes
SHA-256: ee63844ca737c3f44021040db0b9d821ccb2ee927e025a0c185602e1c5dd169b
font_01_sfnt_off0000e25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25F 10120 bytes
SHA-256: f0f95929bae280f957c76b3c8de4c2b8c2b873edca870dd9aab957d8e635bf01

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