Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c34f918a8392ea…

MALICIOUS

PDF

66.9 KB Created: 2021-02-12 23:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fb48ce38462d033577a96636a84c077c SHA-1: 925430c6f8ac10ab73b34bf4323fa2079c51546a SHA-256: 03c34f918a8392ea43d93b7feab25b396c94543c067bf38dee8b911130528d20
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=elle+mcbroom+middle+name In PDF document text
    • https://cdn.sqhk.co/mezutowede/BYKgjsF/61631906187.pdfIn PDF document text
    • https://cdn.sqhk.co/kasesiseb/bfibchi/91691782334.pdfIn PDF document text
    • https://rixonusoraj.weebly.com/uploads/1/3/0/7/130738646/givasawuwik.pdfIn PDF document text
    • https://kedumapeba.weebly.com/uploads/1/3/4/5/134593926/kutidolojipuxusez.pdfIn PDF document text
    • https://fatilisuwojumo.weebly.com/uploads/1/3/4/6/134652656/sagikapevura.pdfIn PDF document text
    • http://bioforce-co.site/the_healing_scriptures5u3u0.pdfIn PDF document text
    • https://nizerekudoni.weebly.com/uploads/1/3/5/3/135383630/fdc3eb58.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/5725211.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/nihggzW/game_genie_codes_for_nes_emulator.pdfIn PDF document text
    • https://doxizuzipoleri.weebly.com/uploads/1/3/5/3/135323895/kewedagoseve-jurafavoxoz.pdfIn PDF document text
    • http://romeita.fun/ruzabusuruwotuzugagdx4y.pdfIn PDF document text
    • http://cpatrump.com/dell_sc4020_deployment_guidexvdm6.pdfIn PDF document text
    • https://rowiteruna.weebly.com/uploads/1/3/4/4/134470704/1b2c86c47.pdfIn PDF document text
    • https://sarejazaxixosib.weebly.com/uploads/1/3/4/6/134633098/lopojexozomenux.pdfIn PDF document text
    • http://usesucre.pro/ripununeputodijanid9gt7t.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/xupimaral/debt_snowball_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/38889079938.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/gesaffelstein_blast_off.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_off0000cafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFB 5004 bytes
SHA-256: 032a21b2420bfa0ea2e869edae63a5bec8d89fd371bfd0280a711fab301a1d1e
font_01_sfnt_off0000dbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDF 10072 bytes
SHA-256: f0735f4350ad24d7f1c4dc9260af52b994ccc90a57fc590bbd4cd89e7103083c

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