Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18dd0697bfca146…

MALICIOUS

PDF

68.1 KB Created: 2021-02-23 02:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e0354f1d9a7958c209a16257d544b590 SHA-1: 17016da3f0839f6b3e3de2ceb31be5070e986abb SHA-256: c18dd0697bfca146988c5f33430ab6060c314196ad92267202e902c156a14dc8
186 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
  • 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.
  • 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/wb?keyword=kenmore%20elite%20he3%20dryer%20will%20not%20start PDF link annotation
    • https://cdn.sqhk.co/zejizoguzut/fjbib0y/funny_videos_2020_download_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499351/normal_5fd666f7351c6.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/munop-gisanu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409806/normal_5fec222f51fdb.pdfIn PDF document text
    • https://cdn.sqhk.co/xidafigutoxa/YQgjjeH/voice_recorder_pro_7_android.pdfIn PDF document text
    • http://kemytbok.xyz/biblia_peshitta_enx9jjd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380213/normal_5ff7e2c739ed1.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/gigukabe_jefigenubu.pdfIn PDF document text
    • https://garixapevawena.weebly.com/uploads/1/3/4/4/134495328/f9a40.pdfIn PDF document text
    • https://gawozigojuvapa.weebly.com/uploads/1/3/4/8/134896601/7677234.pdfIn PDF document text
    • https://cdn.sqhk.co/reruzemafow/Xdjb8kt/60339141040.pdfIn PDF document text
    • https://katibaluzopoxu.weebly.com/uploads/1/3/0/7/130738884/tafamelinexav.pdfIn PDF document text
    • https://cdn.sqhk.co/bilexodofose/GidifYT/koxudevafavijivisadexurin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489041/normal_5ff84ee022586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401694/normal_5fe17b48d2ee6.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_off0000ce33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE33 5392 bytes
SHA-256: 23f4330497e0a259df0942ea5d749b505d940002445e4aaab7a266088ff1540b
font_01_sfnt_off0000e072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE072 10240 bytes
SHA-256: bca70b540e080c622731c665f3baf0380b65418a462e83050ed1a2f833e32f3a