Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3dce62699c2e06a…

MALICIOUS

PDF

72.8 KB Created: 2021-02-23 19:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7379fad2de657c84631ab08a24daf479 SHA-1: 2b08c77d51313b39a6629b80cc8ea0722262322e SHA-256: b3dce62699c2e06aea9ecb20d172640b4e1d0ff68bff7c8040442c1afd6a4838
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=technivorm+moccamaster+59616+kbg PDF link annotation
    • https://zuwuloju.weebly.com/uploads/1/3/2/6/132681456/4971504.pdfIn PDF document text
    • https://cdn.sqhk.co/mewedenemez/dKyjija/42221098679.pdfIn PDF document text
    • https://cdn.sqhk.co/nubenirosife/ggDogdJ/portage_mi_school_calendar_2020.pdfIn PDF document text
    • http://tafagejiveduda.22web.org/wajigavegebujiz.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/jedjbjj/38641542446.pdfIn PDF document text
    • https://kezofufilulo.weebly.com/uploads/1/3/4/4/134488682/6918403.pdfIn PDF document text
    • https://cdn.sqhk.co/zeliravepuj/gc2gd4v/85978368283.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/aig9jge/wobegurawimemaruju.pdfIn PDF document text
    • https://cdn.sqhk.co/mogezunir/rdgbghe/vector_robot_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/eickgiv/find_friends_app_for_pc_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/devuzemalut/jej9gfV/pibones.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jogagogaxunu.rf.gd/blood_type_ab_positive_diet.pdfIn PDF document text
    • http://kimanaw.epizy.com/32900346603.pdfIn PDF document text
    • http://fawogalupa.epizy.com/60638345134.pdfIn PDF document text
    • http://nomufasawanokez.epizy.com/fipowedilid.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_off0000dec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC1 5880 bytes
SHA-256: dc771e32c33ce1d75a5afc9d874d71eff16a18e3080163f5e752524858c25051
font_01_sfnt_off0000f2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A6 10480 bytes
SHA-256: 1ba4bb66ea6b5835cd3dd8ebcefe7912755f2b161c9db0a6aa14f5c8c21c4f28