Malicious PDF — malware analysis report

Static analysis result for SHA-256 856032db0be958df…

MALICIOUS

PDF

78.4 KB Created: 2021-03-07 06:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9f1942cfe1b43f7e9c4ef5af8aa8cb4b SHA-1: 317fdaad98e7e3839aaef5d25f88df9f2efe7f14 SHA-256: 856032db0be958dffdd002d8a961166f7f1f98945a84c3e1100735a6717ae650
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://vilenefex.ru/wix?keyword=bhagavad+gita+barbara+stoler+miller+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466408/normal_602f14cd0f9c8.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/cibhijc/marvel_pinball_epic_collection_vol._1_ps4.pdfIn PDF document text
    • http://pemewozeresozo.22web.org/50427473633.pdfIn PDF document text
    • https://tomadukego.weebly.com/uploads/1/3/6/0/136083679/bujakenojejuni_boguviridof_zajuranebuw_wuvinaw.pdfIn PDF document text
    • https://dexasarejujevi.weebly.com/uploads/1/3/1/4/131454537/potalagexibete.pdfIn PDF document text
    • https://rozenawaxu.weebly.com/uploads/1/3/4/5/134517597/1401483.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/siwizezum_viletadexe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426261/normal_5fe57007900a9.pdfIn PDF document text
    • https://cdn.sqhk.co/mevexobuzur/fhf0ihm/xinebososasewinaj.pdfIn PDF document text
    • http://wijeripe.iblogger.org/kuzogaputegubi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rugiwixet.epizy.com/gukewulojubidolofaromo.pdfIn PDF document text
    • https://234d5d8d-19c9-4cab-a884-dd0775662658.filesusr.com/ugd/fb7225_fdf75ba642944858968b21dbeb16db29.pdf?index=trueIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_1c0b834a62964fe8a654b56e552fb840.pdf?index=trueIn PDF document text
    • http://velefaluzi.epizy.com/como_hacer_una_calabaza_de_halloween_manualidades.pdfIn PDF document text
    • http://mosakokomu.epizy.com/gebetokowutedukaxidet.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_dcb4b682580d4911aa732d3cbe7b0385.pdf?index=trueIn PDF document text
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_36ad572fa04b4fb99d5252b5c1347d6d.pdf?index=trueIn PDF document text
    • https://ce83042b-5faf-46b5-bcbb-9b4d05ec7d33.filesusr.com/ugd/a31856_9576c52a75514869a2c0be3fe12cbee0.pdf?index=trueIn 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_off0000f40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40F 5704 bytes
SHA-256: b2ea5b21e5c528059c705f50f528241f2cb3016812a9179aef4d08a5dc527583
font_01_sfnt_off00010753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10753 11064 bytes
SHA-256: 81ca1d48abe9a9f586b7ae340a0383f80f96a8e2fbeb3a38be7e4bffa0e8cb95

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