Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a685ac86c4ae921…

MALICIOUS

PDF

72.7 KB Created: 2021-02-06 19:38:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c2eb22e8621ce2fb96a138f0545a4e7a SHA-1: 154ce1263ac4599d837f2901107c08715096b2da SHA-256: 6a685ac86c4ae9218bfb641ff8498793a28320fdb4e28d3bf88c7791d13861cd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/aws?utm_term=hallelujah+cello+piano+duet+sheet+music PDF link annotation
    • http://ideaita.fun/jorinefuvavetinate0vgfx.pdfIn PDF document text
    • http://auto-fishing-rods1.club/82000917224d3p1.pdfIn PDF document text
    • http://dimax-matrasy.ru/27088351582l9gr5.pdfIn PDF document text
    • http://uniques.space/hp_elitebook_840_g2_manual1liw5.pdfIn PDF document text
    • http://electorat.org/futawiipamj.pdfIn PDF document text
    • http://mon-cmb.best/sepejuxewnad.pdfIn PDF document text
    • http://salea.site/doxotomedesuxanapilefipajdgne8.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/gijhxhb/the_last_survivor_game_download_uptodown.pdfIn PDF document text
    • http://brettlockhart.com/lejezogiwunefafkerfi.pdfIn PDF document text
    • http://teaapple.space/interrogative_pronoun_worksheets_for3i4ld.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/bededuxotulapil/16031037928.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/6357296214.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/joledu.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/simple_html_bootstrap_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/police_report_wa.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_off0000dc7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7D 5252 bytes
SHA-256: 67723b95905dddf502e2a534d1ba6a7a33cd016dfc8bd9d91f97739579b855c2
font_01_sfnt_off0000ee34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE34 11688 bytes
SHA-256: ad59b41af20e581d661e57be978cfda4ad5d9dc6766df12044100115f6936123