Malicious PDF — malware analysis report

Static analysis result for SHA-256 169edaca1d61fb3a…

MALICIOUS

PDF

62.8 KB Created: 2020-11-16 22:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e4b50320a7150d83faeb9c49f02cf3bd SHA-1: 25b9804bd692036334dccc9f7173966e971eb736 SHA-256: 169edaca1d61fb3af7648434bffeb96f3c2af8257a994f8813bf92240888c2a5
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 0.9957

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://trafffi.ru/123?utm_term=scream+week+stream+deutsch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476152/normal_5fa66617ce864.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/090cff04-1574-42da-b859-dc627cbb759b/jutikobez.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/48110657379.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/75426106707.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/pathfinder_kingmaker_best_wizard_build.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3766e306-3539-46c3-ad59-d8b6dd338d3c/renujapamorima.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/tavejeju.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/xuwiwalegazopilozumekano.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_off0000b760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB760 5404 bytes
SHA-256: a25c954c9666dc521182b82cba7eec1df8c86202f59a350c0fe528bb7ac4547c
font_01_sfnt_off0000c9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AA 10932 bytes
SHA-256: 52c8254440c778ff0b30309ee1d69e94da999b9f159e507978a31e809082ade5

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