Malicious PDF — malware analysis report

Static analysis result for SHA-256 736e9a863004e374…

MALICIOUS

PDF

85.8 KB Created: 2021-02-14 11:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 62733529935877853f7296127b75be59 SHA-1: f62a0ba39e107a4dc6302a7a0f3a8bb7996c331c SHA-256: 736e9a863004e37463ec62698b306d40e2530e20a80c3b74d01e2736cf495ae9
186 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
  • 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://bologen.ru/wb?keyword=experimental%20design%20worksheet%20answers%20psychology PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419847/normal_601f1da896afc.pdfIn PDF document text
    • http://kinorio5.xyz/norobapupiraog1a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372086/normal_60207a6f2109f.pdfIn PDF document text
    • http://strapslap.online/you_raise_me_up_sheet_pianoj5cif.pdfIn PDF document text
    • https://bewimowijukoja.weebly.com/uploads/1/3/4/5/134584545/4453611.pdfIn PDF document text
    • https://xibigulekin.weebly.com/uploads/1/3/0/9/130968960/sezodevonod.pdfIn PDF document text
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/vukusimosamubopuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_60147feff28af.pdfIn PDF document text
    • http://fortuneocredit.com/canon_in_d_piano_sheet_music_freerww0o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5fdae0ec10f32.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/smashing_pumpkins_disarm_cello_sheet_musicazje5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369927/normal_5ffcbe11018fb.pdfIn PDF document text
    • http://qiwi-wallet.online/85851251730yp4u0.pdfIn PDF document text
    • http://esmoney.site/smoke_editor_steam_effects_photo_studioszbq40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371266/normal_5feec9ad6750b.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/viregujipowuru/xowadovokidaruborudas.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/94228469173.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/classic_wow_duskwood_quest_guide.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_off00011125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11125 5772 bytes
SHA-256: b4efa382b0a561d16f8814f8af14a69bae59f8e48a273c46cb475bed71b590b6
font_01_sfnt_off000124bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124BC 11084 bytes
SHA-256: 3dc38386057574e07afc02ffbbe107a1b6a646a187394c74e097f3dc4d1c7bb1

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