Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ae6fdf11db8b82…

MALICIOUS

PDF

72.2 KB Created: 2021-02-11 18:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5f9a07d94c453155f803d1a43c48eeb9 SHA-1: a1aec4f62aac9af04106db92ee911f3d47f104c1 SHA-256: 45ae6fdf11db8b8215c9d6382a6786c030a12e03d9fa4743622f9dc373d4c1dd
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://druttle.ru/wb?keyword=angry%20birds%20rio%20activation%20key%20free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454054/normal_5fcf06a466423.pdfIn PDF document text
    • http://legalevi.22web.org/adblock_for_stock_android_browser.pdfIn PDF document text
    • https://fedalovojuxunod.weebly.com/uploads/1/3/0/7/130775560/xuwolunuxanirafel.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/jgdLigp/rimidiral.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/hj0qijS/nomewa.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/gQgdicd/78720691921.pdfIn PDF document text
    • http://moreronofi.iblogger.org/96173762078.pdfIn PDF document text
    • http://mugowewu.22web.org/dilomubejomu.pdfIn PDF document text
    • https://cdn.sqhk.co/muzolorakow/ciiiiMO/skee_ball_plus_apk.pdfIn PDF document text
    • https://natitapa.weebly.com/uploads/1/3/1/3/131379406/kesibununamatofijufe.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/exhjcgd/au_mix_mod_apk_happymod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://timadulikojig.rf.gd/adobe_lightroom_android_4pda.pdfIn PDF document text
    • http://gifimedirawi.epizy.com/lepubere.pdfIn PDF document text
    • http://sasomibaben.rf.gd/zudilekovelibevo.pdfIn PDF document text
    • http://zozoresupiz.epizy.com/zevovixogokedosawofuvipaj.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_off0000dc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC99 5512 bytes
SHA-256: d6c0656df39f19f1d39a019a20ad6d515b3726da78bc401c8127faf7edba6fb4
font_01_sfnt_off0000ef85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF85 10872 bytes
SHA-256: 5340bc384bb6690abfd5ae770adf035e65e0bfedcba83e0b2d75b975080f0ba2