Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e9658a619e7b9f…

MALICIOUS

PDF

65.8 KB Created: 2021-02-28 02:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ff35f8ce8c28717577df2b28f981826c SHA-1: 3bfd3e412864b00a7ac8cdd9dc50d9d86f8c1027 SHA-256: 21e9658a619e7b9f83846bb492103509e956cc5adecbceefe16fc9a3ad300ae2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/wix?keyword=mr+and+mrs+wooden+letters+amazon PDF link annotation
    • https://linanilutujaro.weebly.com/uploads/1/3/1/4/131453593/7150037.pdfIn PDF document text
    • http://zigoramad.iblogger.org/juxesul.pdfIn PDF document text
    • https://vomuzubedabop.weebly.com/uploads/1/3/0/9/130969103/8789555.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/1ieqzWE/morufofalonepav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485822/normal_6000ad7d9dc86.pdfIn PDF document text
    • https://cdn.sqhk.co/wokowuvawuz/gffbHgi/dokudifi.pdfIn PDF document text
    • https://xuduwenonotowud.weebly.com/uploads/1/3/1/3/131379268/598731.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/igegcHe/potbelly_sandwich_shop_printable_menu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489414/normal_5ff75e60899fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505699/normal_60359c402cd5a.pdfIn PDF document text
    • http://excellent-spb.ru/57759647155dylwr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469834/normal_5ff0f1a4d0eb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422168/normal_5feb07b46760a.pdfIn PDF document text
    • https://fezadegijowazon.weebly.com/uploads/1/3/4/0/134096780/960523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377120/normal_6014e6c57367c.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/cpFK6hi/photo_lyrics_video_maker_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zofonabiz/iigjIeX/mastercrafters_fireplace_clock.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lipunigofajeza.epizy.com/subadogusasuremejojuwoweb.pdfIn PDF document text
    • http://zukixewagiv.epizy.com/23898223763.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_off0000c561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC561 5120 bytes
SHA-256: 92ea134b31d5988382e6b62b4444fae13f4ecfffe9d3106362574f596c9523b0
font_01_sfnt_off0000d6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D4 10388 bytes
SHA-256: 742cbb1ad428ce7451e00dfe8a6010da92b1e5616af513a1b5b7642be4dfde59