Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c29274b1c55cd1…

MALICIOUS

PDF

75.4 KB Created: 2021-01-21 11:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5003742b4e7cd3ed62a390503de0f048 SHA-1: fed638d319f053fb7a4e5f52e6cc60f0b8df596e SHA-256: c9c29274b1c55cd12c323352a9476c6907920639c2f3d451cf9f07af5cb9fabf
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/123?utm_term=lancaster+high+school+lancaster+sc PDF link annotation
    • http://didezidise.22web.org/lawirajofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454547/normal_5fa537645707c.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/gv93jga/coin_pusher_machine_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/V2rk1je/mow_zombies_mod_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/Zigrqjc/zagaju.pdfIn PDF document text
    • http://boxidodo.22web.org/56005216300.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/jqhijfQ/fekonuwifewepuzu.pdfIn PDF document text
    • https://cdn.sqhk.co/dalegoti/ggjjOjc/formula_1_news_pole_position_today.pdfIn PDF document text
    • https://cdn.sqhk.co/letowajaf/jdgg3D3/warlings_para_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://godolefimew.epizy.com/10657338628.pdfIn PDF document text
    • http://bejopobu.epizy.com/kumuge.pdfIn PDF document text
    • http://ximitexus.epizy.com/90788585767.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/market_research_report_sample.pdfIn PDF document text
    • http://zukewanika.rf.gd/80959410281.pdfIn PDF document text
    • http://tosaxope.rf.gd/fujakojokifo.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_off0000e887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE887 5000 bytes
SHA-256: 038aac5c79481de95f275024d54b24b459ea9dd3107ca4a5d70425c815cf150e
font_01_sfnt_off0000f982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF982 11544 bytes
SHA-256: b7095f835109c3211d60e784430ce38e7f762ec7e76ddb641855a04c280afe90