Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f4cd9158e0b1b8…

MALICIOUS

PDF

74.1 KB Created: 2021-03-03 21:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a8400be04e2f8c2025cea310e074141a SHA-1: 2663d75fbbc21a5071aaf5fd851a56c2e24d4289 SHA-256: 29f4cd9158e0b1b81b6d9436a12b256df846730119691ba2611b66a6179dfca9
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, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest an attempt to redirect the user to a malicious site, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lozipotod.ru/wix?keyword=etico+y+moral+diferencia PDF link annotation
    • http://taxevidel.medianewsonline.com/92129299029.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/lifMiji/deathrun_portable_color_codes.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/fight_club_book_ending_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478946/normal_5fef7d4da3f5d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495269/normal_600271ea990d5.pdfIn PDF document text
    • http://vivudanu.scienceontheweb.net/imax_b6_charger_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453103/normal_603d93d9ada10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387031/normal_6019f259694e5.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/direct_and_inverse_variation_worksheet_kuta_software.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/hWii1hd/64458765268.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454550/normal_5ffb5c626941e.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/nuxomigo/59623872210.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/54427700711.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/83120595553.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/android_version_percentage_of_users.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/what_size_water_softener_do_i_need_for_a_family_of_2.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_off0000e694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE694 5048 bytes
SHA-256: 6ddd310c12321fa8951470fffa387f38a81ca67e85f72e2f9050f2b12235063f
font_01_sfnt_off0000f7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B5 10532 bytes
SHA-256: 6a07bb47a0b204af8133611bb11ea4eb81e255527dea6dd984ed76aa1161e886

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