Malicious PDF — malware analysis report

Static analysis result for SHA-256 0255fa5c29fc4d25…

MALICIOUS

PDF

62.9 KB Created: 2020-11-18 04:59:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e48003cf3bfc69e81578cce023f44a63 SHA-1: 39ab3c332d9bb1e9d7d314ea23a37126d2da5bcf SHA-256: 0255fa5c29fc4d25ab1e249f701fca69384d6e8a88fd359c0e8b53cecd5c7cf7
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://trafffe.ru/123?utm_term=715+credit+score+car+loan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489969/normal_5fb33354da11a.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/fexanakusemizipela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455658/normal_5fa43d7914369.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476294/normal_5fac0615666b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469128/normal_5fa4ad9810f8c.pdfIn PDF document text
    • https://juzoliposiwe.weebly.com/uploads/1/3/4/3/134322138/gulivozojun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476421/normal_5fb3dd0f796b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f8cb1adc9c44.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/13827622108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c1e7f51-52fb-4e4f-9718-575f0d65a392/76123627665.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/dawekosufesaxexip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a5cc97a-6ab6-4819-9601-a50687e4b451/pomeluwuvolaxadexinimiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a3c88c-6854-4062-a983-0fef48d14573/the_real_thing_tom_stoppard_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca2f314b-a925-46b4-9bdf-14196b5c7f2d/64279385184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a850fd08-a2ff-4396-a82d-829149c78bd1/54037218494.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_off0000ba50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA50 5096 bytes
SHA-256: 5018f7aea9fd5c705dd1fe2b76fc35f664d242ab07cb724438e3ffda559f3082
font_01_sfnt_off0000cbbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBE 10308 bytes
SHA-256: 879b7a3c4940d5aac8773cfbd6fe895723fd13f3e813d605a8b96b9d58d3ea6f

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