Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8c66cae49ab3b72…

MALICIOUS

PDF

77.0 KB Created: 2021-03-09 07:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 07fe00ab37f9625ec250e373f9800698 SHA-1: 44f72e21418a8f581dae501f4df1b416116df538 SHA-256: d8c66cae49ab3b72623f6da1f4ff802c2b1829814ad9387fcbbef7dec743dc36
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a vehicle maintenance guide. This URL is likely used to deliver a malicious payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent, and the PDF structure suggests it's designed to exploit users through social engineering.

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://xezojetit.ru/strik?utm_term=how+to+reset+check+engine+light+2003+chevy+silverado PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408184/normal_600f1efa7e4c1.pdfIn PDF document text
    • http://sushibara.net/35291194684i0752.pdfIn PDF document text
    • http://runmasten.online/how_to_print_copies_of_a_painting2o3v2.pdfIn PDF document text
    • http://sun-italy.space/aafp_board_review_questionsefx87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378607/normal_5ffc6fa780180.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482872/normal_5fcc82f429700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470231/normal_5fd637fe25a91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413019/normal_5fe5e460bcc7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452382/normal_602ac591eff32.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/kuxuxemu/baird_42_inch_tv_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/32574700195.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/cara_video_instagram_lewat_link.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/powerpoint_process_chart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/vekebekanubomezawakerexo.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/kugegikulu.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/android_tablet_vs_ipad_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/82078258134.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/danujukugoveponegup.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/rezozizikum.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/spotify_apk_premium_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/acbrandres._dll_file.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/excelsior_springs_walmart_grocery_pickup.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_off0000ed0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0E 5916 bytes
SHA-256: d1d2fbc700c3fd467730d352f1d049b25d4f66111abd63a06e24f6cb1099a7ad
font_01_sfnt_off00010145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10145 10900 bytes
SHA-256: 65a0d01f570d46785099398dcb988a235ba0886fc58a14b565ab5bf227cfe987

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