Malicious PDF — malware analysis report

Static analysis result for SHA-256 77919bc0cf7b649d…

MALICIOUS

PDF

71.9 KB Created: 2021-01-19 11:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 23ca56f9bee8bc8ff8c3ae8dea2fb644 SHA-1: 42bc445529ee08c34aba597a5bd4c5922b9698c4 SHA-256: 77919bc0cf7b649d7686545ca6e3528f2ed243dc757b9a8ef56fb90c0e2ca652
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://maypoin.ru/aws?utm_term=free+modern+cv+template++pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472204/normal_5ff1f330159e1.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/13Fierm/21665032025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452834/normal_5fbbe0ae97c51.pdfIn PDF document text
    • https://wekosidofanepa.weebly.com/uploads/1/3/2/6/132696212/b5185f5a685158.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/c0iagCt/30955708487.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/q4Mje5B/98396405877.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_5fea3bc90f79c.pdfIn PDF document text
    • https://sefubokadizafa.weebly.com/uploads/1/3/4/8/134880044/tiguzuro-katapetojud-ridudow-bipamika.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/jalasilunaz/labview_report_generation_toolkit.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/74070396542.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/70370475639.pdfIn PDF document text
    • http://balazetesu.epizy.com/20543246180.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/17383539411.pdfIn PDF document text
    • http://nisuzadusidu.epizy.com/deep_house_music_free_south_africa.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/vamavulodegoxefig.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_off0000dd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 5136 bytes
SHA-256: adbf9a93d9a4c34a0d69ed9ee107fc2568c04077622d2d837b7c0aef3abda51b
font_01_sfnt_off0000eead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAD 10664 bytes
SHA-256: 03808275217f1e8b6356dfc145338edb9e0a6fbd1b35e4e30c82472edd7bd560