Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf25bbefbb2c784b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-24 10:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e983dc736adb1d4bf5da6f9326eb4ef8 SHA-1: 3be7533eb26fa593785167fd30b9ca4cd9833ee7 SHA-256: cf25bbefbb2c784b431ad27359f72ca71f3889df99359f2f359b0a495b1424d5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wix?keyword=life+cycle+of+birds+year+5 PDF link annotation
    • https://cdn.sqhk.co/fegojujor/Y5IvEii/rufuneteviv.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/Icig9ji/tavudunavivenige.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478408/normal_5fe24c3b77ca1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_6028c0afa8a0b.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/aXiRX8j/7184073677.pdfIn PDF document text
    • http://cooldomen.space/boruvibezoderodoj71jt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_5fe63a9a851ca.pdfIn PDF document text
    • https://cdn.sqhk.co/pidagasew/jCjficd/chrome_dinosaur_game_offline_dino_run_and_jumping.pdfIn PDF document text
    • http://peludofnor.fun/capsaicin_patch_walgreensv8a9w.pdfIn PDF document text
    • http://itdiscount.info/wegupaduvisabixujupalapofo3i4d.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/how_to_write_latin_numbers_in_wordbyaee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500450/normal_5fdcbbead9328.pdfIn PDF document text
    • http://tokio-2020.fun/bonutikovod5gnge.pdfIn PDF document text
    • http://momentshop.website/zeus_tv_network_promo_code7x4gu.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/IKjeshg/gofoxitosup.pdfIn PDF document text
    • http://macsk.space/34083786561rxly3.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/ljgihid/mitisi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAA 5324 bytes
SHA-256: 86d8d93a42dc89900a3b8211f1f021c9caf27dc97a249cec69b033c0f6312a62
font_01_sfnt_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 10240 bytes
SHA-256: cf3ae78df43768b18fdcb39011a8aac8d66a9401fa42d5ff8de7a353e28f0d1d