Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08f45bd10197fe9…

MALICIOUS

PDF

76.7 KB Created: 2021-02-24 15:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8821f8b891543967abc306b33e99f70c SHA-1: 5e1a144a8eebca156ae59883d932e5fad699c872 SHA-256: a08f45bd10197fe999039e9246a9d8c5cb46559619d593d4d0a72151e16fd58f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://leonvi.ru/wb?keyword=lover%20awakened%20jr%20ward%20read PDF link annotation
    • http://detonic-official.website/dubanvyu27.pdfIn PDF document text
    • http://hamlikjorettoop.ru/tva_collecte_et_dductible5o3tk.pdfIn PDF document text
    • https://xuxulavadimuxa.weebly.com/uploads/1/3/4/2/134234789/9ea574abb6.pdfIn PDF document text
    • https://rixogeki.weebly.com/uploads/1/3/4/6/134693266/3569672.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/gchjAif/73902956137.pdfIn PDF document text
    • http://itash.space/pole_vault_stick_pricehr5ow.pdfIn PDF document text
    • http://feziweninepiv.iblogger.org/irrational_numbers_between_2_and_7_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/tovasodoj/idjgpij/segub.pdfIn PDF document text
    • https://cdn.sqhk.co/migukosodaza/gdjggc8/6035055451.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/exgiM2o/relilisazusuvasusew.pdfIn PDF document text
    • http://soldatskaya6.ru/63221612812fpco1.pdfIn PDF document text
    • https://xaxozugine.weebly.com/uploads/1/3/2/3/132303195/6085689.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/bWhcheF/suxusujukikateze.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/g2Qpjko/10874030504.pdfIn PDF document text
    • https://kipopedetazezu.weebly.com/uploads/1/3/0/7/130775623/31580d4c750f.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/etgeii8/49673789695.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zujetisapapido.rf.gd/simple_liquidation_report_sample.pdfIn PDF document text
    • http://zuzojep.rf.gd/paper_chromatography_of_leaf_pigments_lab_report.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_off0000f017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF017 4840 bytes
SHA-256: 3151fcdd75168a0ed8f99a9edd2170d09017433275e61a89e7d61f3402bcbba4
font_01_sfnt_off000100ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BA 10600 bytes
SHA-256: 7b7b3584e2cfc2b0ba1f14bd582740dfc6a19a2e644d0eb4dbd727f7aa2cbc0b

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