Malicious PDF — malware analysis report

Static analysis result for SHA-256 f190427868b773aa…

MALICIOUS

PDF

91.5 KB Created: 2021-02-28 16:10:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 66dd4ee7bb69a1a78c218449f5b97e20 SHA-1: 6661d1d69a0807c6a7cb9f23d7822865bc1a276f SHA-256: f190427868b773aa6ecea8d12cab38cf379509e424aa587c4d684479c4f20947
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Phishing.Trojan. The embedded URL `https://pelibifir.ru/award?keyword=maya+angelou+poems+pdf+download` suggests a phishing lure, masquerading as a search result for poetry downloads to trick the user into accessing malicious content. No scripts were extracted, but the overall structure and URL indicate a phishing attempt.

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://pelibifir.ru/award?keyword=maya+angelou+poems+pdf+download PDF link annotation
    • http://junumidutuzakox.getenjoyment.net/xetumutupamigusatiwiked.pdfIn PDF document text
    • http://lusizekemuva.22web.org/what_to_do_if_your_android_tablet_wont_turn_on.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/perevigezeja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485569/normal_60183808baffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471250/normal_60228aab918a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470835/normal_5fd91ba04e88c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pakoxerevigere.epizy.com/neonatal_hypoglycemia_guidelines_2016_aap.pdfIn PDF document text
    • http://wusasozomumag.epizy.com/magical_beasts_and_where_to_find_them_streaming.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/wolulixatomaj.pdfIn PDF document text
    • http://bexalawisilinot.epizy.com/strategic_sport_marketing_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/3485558143.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/58586942902.pdfIn PDF document text
    • http://femavumifixomud.rf.gd/motozore.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/fidegixulolojerixinapufu.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/15084424145.pdfIn PDF document text
    • http://xenezipulugiji.atwebpages.com/linonawawonosujelifikediw.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_off00012b49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B49 5464 bytes
SHA-256: 5cba68e7b51e7e32916460f938eecc3c08bd1e0afbe51590415f67849831c452
font_01_sfnt_off00013dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DFD 10220 bytes
SHA-256: 0168d675e9a2131fa55eef5a65389beac86c923b3b8d706804c52cd1f81567de

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