Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c0101b6c2da990…

MALICIOUS

PDF

71.6 KB Created: 2020-11-22 15:37:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 487040342f0bdfd921616d10e4e49ff1 SHA-1: d8622f38c997c69d4beceeca18a2a5bf58a7354f SHA-256: e5c0101b6c2da9906dbac8d0262474ae2a80f27bafc1ec7ed76312f08fa49da2
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 0.9995

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://traffine.ru/aws?utm_term=illaoi+guide+8.+19 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443815/normal_5f9f2c119186b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f896a66ef49c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5f9ad9bd908af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404133/normal_5fb81cff68421.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464068/normal_5fafef24de6f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_5fa081af5aef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_5fb7c4cb476ee.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/jevuxozazebazug/halle_berry_dress_style.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/vulojusigave.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/vukop.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_off0000db57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB57 5092 bytes
SHA-256: 58ca94b2c0a4514e362dfa6a1e112aa38910506ab113478f2e34a3be59c5f588
font_01_sfnt_off0000ecc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 10968 bytes
SHA-256: 39a6fc4fb7f063f706d53f60affc2b6577bd1d7f3540a5aa4158840f2ca2bcee

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