Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed574cf998b7dcd…

MALICIOUS

PDF

75.1 KB Created: 2021-02-28 04:36:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a54fe0ca9a5baeae3d82676b920e3a61 SHA-1: b9bb80f77cd2f05e4000b492c6ef406ec550c2ff SHA-256: 9ed574cf998b7dcd090f9eb4a7002f0fc444c09adf2ed5b967bd1db25984f79b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/wix?keyword=sugar+changed+the+world+pdf+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463554/normal_602d8a357fbf4.pdfIn PDF document text
    • https://zexuboru.weebly.com/uploads/1/3/2/6/132683252/87e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_602662f32078d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409405/normal_5fda5ee1627cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485927/normal_5ff3d220e3421.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469104/normal_5fc777e7ea004.pdfIn PDF document text
    • https://zegusuvi.weebly.com/uploads/1/3/4/7/134738546/bedevupadi-rudowi-wemuwogorabumix-xulasapoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412388/normal_6034f36def069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_6023803acca5d.pdfIn PDF document text
    • https://xibutunu.weebly.com/uploads/1/3/4/0/134017024/8b9af986c66200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_600fddfe6e6c9.pdfIn PDF document text
    • http://devgm.design/sisamadusobv4h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416654/normal_602fdd759ccb8.pdfIn PDF document text
    • http://paypallsecurity.com/angry_birds_dream_blast_musicpkgpv.pdfIn PDF document text
    • http://dnepr24.info/cummins_n14_celect_ecm_wiring_diagram2cj4l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384029/normal_5ff8b5230a314.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454286/normal_60096a3045d52.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/vuliwisuwig/the_underground_history_of_american_education.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_off0000ea69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA69 5436 bytes
SHA-256: e612dfdba43aa5934407f57de283116b6a84f4069de2e3be1cc02924d273ba36
font_01_sfnt_off0000fcf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF3 10060 bytes
SHA-256: 3ce7f64ffc7a2a32f76b7678851435de094441b075e863e4c6a6112952811995

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