Malicious PDF — malware analysis report

Static analysis result for SHA-256 2846c19217d411e3…

MALICIOUS

PDF

66.6 KB Created: 2021-02-14 18:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5c4db5f79156534aee44601753f5476c SHA-1: e4265465eda19a31c4b9bc0a90c8bf28d3c08dca SHA-256: 2846c19217d411e333c744edcc8f875bcd52c888eb78a5ee4c2f10b67ab2b3d5
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/wix?keyword=daily+common+core+review+12-4+answers PDF link annotation
    • http://vosalax.22web.org/template_powerpoint_minimalis_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/Yidqmgg/traffic_watch_ni_derry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386607/normal_5fdd97aaadb5d.pdfIn PDF document text
    • http://tujubiluwanodof.22web.org/adenoiditis_hipertrofica.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/gecgigd/71971315745.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/d16hdd1/reynold_masterchef_coconut_dessert.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_5fd1f002a4931.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/zeworibuzoza/anjali_bhardwaj_new_song.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/fekavifukilegokitiw.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/91199631612.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/getejujaxogeritofotimu.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/yiruma_kiss_the_rain_piano_sheet_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/byomkesh_bakshi_serial_music.pdfIn PDF document text
    • http://gudoxigamodire.rf.gd/lean_six_sigma_yellow_belt_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/brushed_cotton_sheets_super_king_size.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/woxunerotugazewad.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_off0000c941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC941 5500 bytes
SHA-256: 9a1be8b5eb6ada0b172b8c7d2b1ec2934937a7ce1112d0416bec1db901b3d32b
font_01_sfnt_off0000dc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC14 9872 bytes
SHA-256: b3b7d0d19663a964ede396854695fbaa6efc2993b665aa466dcf36a24c642c33