Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb9f82cb0d0b6619…

MALICIOUS

PDF

72.3 KB Created: 2021-02-08 15:08:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2087319d66c5b587e53f1cc2ab0150ce SHA-1: 755906d1bd88a559d07a0cea9dbc33d603bc2105 SHA-256: fb9f82cb0d0b6619a3f7eb693ff6d30b420dbc3486ce69322ec2e9cfe5bddc9f
194 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.
  • 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://leonvi.ru/wb?keyword=criminal%20case%20mysteries%20of%20the%20past PDF link annotation
    • http://ziponep.22web.org/himouto_umaru-_chan_parents_guide.pdfIn PDF document text
    • https://lufosafol.weebly.com/uploads/1/3/0/7/130775677/0098cbe01.pdfIn PDF document text
    • https://vumukawa.weebly.com/uploads/1/3/4/6/134662430/d4601231ec1.pdfIn PDF document text
    • http://nibumuxadata.66ghz.com/bromatologia_i_chemia_toksykologiczna.pdfIn PDF document text
    • https://jetukuzimol.weebly.com/uploads/1/3/2/6/132695660/vavov.pdfIn PDF document text
    • https://cdn.sqhk.co/xejoxoka/5hjdiay/xelegagogezubinib.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/mA4TRia/major_mayhem_2_mod_apk_happymod.pdfIn PDF document text
    • https://cdn.sqhk.co/vabadoma/heD9xjj/lost_jewels_match_3_puzzle_mod_apk.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/435c6969a28120.pdfIn PDF document text
    • https://pejedakava.weebly.com/uploads/1/3/1/4/131453393/bd8002bc5.pdfIn PDF document text
    • http://wajufogisabo.iblogger.org/application_airpods_2_android.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/bokofapig/build_apk_from_react_native_project.pdfIn PDF document text
    • http://rajixubododafu.epizy.com/wubakova.pdfIn PDF document text
    • http://lapamapifutul.epizy.com/marks_and_spencer_baby_shoe_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/14960787536.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_off0000de10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE10 5260 bytes
SHA-256: 0cc7819336f22c31cfaa9c39070d8e8dcba05b7cec556f41f62446a53658ae74
font_01_sfnt_off0000efcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCC 10732 bytes
SHA-256: 6879f4b3b6e6085cc3610499ae6d85a05ff22db8d41a779e717810af5ec900cb