Malicious PDF — malware analysis report

Static analysis result for SHA-256 7467b48a274b93d0…

MALICIOUS

PDF

83.2 KB Created: 2021-04-16 23:36:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 281e529bdf071e3219a21d5ec038c787 SHA-1: 839fa08bbf053e2194db143386023df0b0e79dc1 SHA-256: 7467b48a274b93d08bf58b05314e16f3f8e2337385a8a9566aeb67d47aaca96b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the nature of the detection suggest it's designed to lead the user to a malicious site, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=never+enough+guitar+chords+iann+dior PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379960/normal_6018f7862af3a.pdfIn PDF document text
    • http://tiledevaw.22web.org/fasufuluturereruxugenazi.pdfIn PDF document text
    • https://cdn.sqhk.co/niwuwusogoxo/bgghgje/vufemosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408719/normal_60515a023ed7a.pdfIn PDF document text
    • http://zebekuji.22web.org/kewevavix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fe05ceaa09c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402707/normal_5fcea6b62f8f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416332/normal_5fff06165ba8c.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/bqvicHz/57075637252.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pelubameta.epizy.com/80842041088.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/watajezekojut.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/pvc_expanded_foam_board_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/knights_templar_school_baldock_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/how_to_dissolve_a_protective_order_in_louisiana.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/65592711715.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/how_do_i_stop_my_bosch_alarm_from_beeping.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/butterfly_s_grace_destiny_2_guide.pdfIn PDF document text
    • http://gizimup.epizy.com/96178990205.pdfIn PDF document text
    • http://tamefizorala.epizy.com/tematyczny_sownik_polsko_angielski.pdfIn PDF document text
    • http://xunaruxu.rf.gd/mr_amari_soul_reflections_of_a_man.pdfIn PDF document text
    • http://sopexas.epizy.com/husqvarna_315x_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D6 4004 bytes
SHA-256: b755e63a8535dd0a22157cfeb0725b85ab4ff55d1e480c95b61d3128615ebe69
font_01_sfnt_off00010419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10419 5200 bytes
SHA-256: dc9f2a2d75a97bfac003ab09b6a8ca7d88dffa91052f0887b6b4136856f6b4fb
font_02_sfnt_off000115ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CE 12104 bytes
SHA-256: 55b06d141ca7258ee67f27366958dde0a4c3880793cc4f52fe460e2ecb679556

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