Malicious PDF — malware analysis report

Static analysis result for SHA-256 2faa631e15c4fb45…

MALICIOUS

PDF

71.6 KB Created: 2021-02-28 21:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4108fb3617778698f212bb3561838ca6 SHA-1: cdbfdad933245887cd0f5c13dfcbbbe0ea29a7a6 SHA-256: 2faa631e15c4fb45df4ba5758fe21fd5a487be1bd7eab39647f073306936c1ab
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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/award?keyword=use+fuzzy+lookup PDF link annotation
    • https://tozadifoxu.weebly.com/uploads/1/3/4/9/134904498/6645523.pdfIn PDF document text
    • https://cdn.sqhk.co/tobowovum/iGZihia/12428926183.pdfIn PDF document text
    • http://winwites.space/conductivity_and_sheet_resistanceiy45i.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/aafDJzK/monkey_shoulder_scotch_total_wine.pdfIn PDF document text
    • http://jopkapopka.online/14719303622dxl9a.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/flS0hzO/field_goal_kicker_game.pdfIn PDF document text
    • http://mixed-rootwork.com/synthes_antegrade_femoral_nail_technique_guidexwrbx.pdfIn PDF document text
    • https://gobumireg.weebly.com/uploads/1/3/1/3/131383916/3077855.pdfIn PDF document text
    • http://infokurs.design/molinero_e_slater_o_internet_uma_apr056hk.pdfIn PDF document text
    • https://cdn.sqhk.co/wujukipako/jdgi6jg/general_electric_stock_price_today.pdfIn PDF document text
    • https://cdn.sqhk.co/kokademesuz/klVofhj/tagerobuxomakatov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://disofebuwugojuj.epizy.com/executive_summary_samples_for_a_report.pdfIn PDF document text
    • http://temekem.epizy.com/3137222330.pdfIn PDF document text
    • http://buwanizun.epizy.com/capezio_ballet_shoes_sizing_guide.pdfIn PDF document text
    • http://dizojid.rf.gd/fukaxubolube.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_off0000de01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE01 4796 bytes
SHA-256: f44077d2dd87cd3547605bd56cc5a5e92e90c23a30ba37cb19e2653dd032295a
font_01_sfnt_off0000ee85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE85 10340 bytes
SHA-256: 0bf1f2adb8c14761f74799a9bf179da9ffd335a63f6a87e862b80ca941fb301f