Malicious PDF — malware analysis report

Static analysis result for SHA-256 8846f6de79545dbb…

MALICIOUS

PDF

73.3 KB Created: 2021-02-04 07:45:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1ddfd762451c98b3c4b6271b7603c3bf SHA-1: 50f76df16e066c5047973e65494376fb6591392c SHA-256: 8846f6de79545dbbe1a734e03f0c916d2094f0344bb581dffb510e71d661aaaa
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/aws?utm_term=balu+abcdefg+hd+video+songs+free PDF link annotation
    • http://gifudevuf.iblogger.org/buvorufinokapuvoxugolawig.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/9gjgjec/99238437638.pdfIn PDF document text
    • https://cdn.sqhk.co/jepivitixiwo/hjijHuy/mens_christmas_running_shoes.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/gjjdiis/suriborisodumazewisil.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/vipinib/zumevetumugoxiremegalomov.pdfIn PDF document text
    • http://lelirovosas.epizy.com/asana_templates_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/scaramouche_saxo_alto.pdfIn PDF document text
    • http://mevonaku.rf.gd/83598628310.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/videoder_apk_2016.pdfIn PDF document text
    • http://puredaw.rf.gd/kafiwoparexumokazotes.pdfIn PDF document text
    • http://widafasamuj.epizy.com/bukujufafiwuzalijemowov.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/47807336506.pdfIn PDF document text
    • http://nawugem.epizy.com/austin_allergy_mold_report.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/dog_breed_quiz_game_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/biochemistry_textbook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/32448814400.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/38654818134.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_off0000e199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE199 5532 bytes
SHA-256: 33e18669d9f07e90c93aff2274834fdd73bf0d80634d33e4b1c584b6d8d2917f
font_01_sfnt_off0000f46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46C 10272 bytes
SHA-256: bf74c80b3100e713e6844602aedda6a294ac3d58e09279e03e4613bed98405e8

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