Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f8934397ead878…

MALICIOUS

PDF

74.9 KB Created: 2021-03-10 12:09:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 948784f2c379e54ffaa39eb3cc390935 SHA-1: d4ce2df7dcd33a57cd04dc8cbffe33e190911bd7 SHA-256: 03f8934397ead878115a717c09666334d7216d7c838bba17aeb131b37c283227
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://midufefew.ru/award?keyword=barron+s+gre+english+vocabulary+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411491/normal_60419f802868a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485173/normal_5fd916c01983f.pdfIn PDF document text
    • http://skameyki.club/nebesosumpew8j.pdfIn PDF document text
    • http://lnstagramsupportlives.com/xofinifuvutezurekabuq1ywu.pdfIn PDF document text
    • https://dusoveri.weebly.com/uploads/1/3/1/0/131070325/8509357.pdfIn PDF document text
    • https://zedurobarudavur.weebly.com/uploads/1/3/4/0/134018347/kidewewanigat-lewadevivofug-bavamikiji-geralojix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372383/normal_5fdf910c472e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489257/normal_5ffa36d44e935.pdfIn PDF document text
    • https://nevonanopovew.weebly.com/uploads/1/3/4/3/134335048/vajesot.pdfIn PDF document text
    • http://leftoutclub.com/the_cognitive_perspective_in_psychology_emphasizes_howacrkx.pdfIn PDF document text
    • https://vonulimuwudepaf.weebly.com/uploads/1/3/4/1/134131723/ce7a998cbcd4a.pdfIn PDF document text
    • https://ragojozuzaz.weebly.com/uploads/1/3/4/6/134668900/136817.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_06b5114e840c40cc824545bd4d2a5d51.pdf?index=trueIn PDF document text
    • https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_eca92e8f01964ef2a06595e1bee4c6cc.pdf?index=trueIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_aa7422332e47443fa8a238baa109686c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea92b32f-3de1-44f7-827d-0b6ef5041a23/harry_potter_yla_camara_secreta_resumen_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c92fc3bd-5da3-42a0-b8f5-66b7cc8c1e28/66803757420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e8561fb-dd8e-47ff-83dc-7144b77c3970/zone_of_proximal_development_in_teaching_adults.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_off0000e5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AF 5768 bytes
SHA-256: 79ded7b7076f4dd58acb6b022df26641e84a3d9ed0474fe1753f81258397e251
font_01_sfnt_off0000f95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95E 10904 bytes
SHA-256: 3766b1c8df370710b4f7829b00d5d9b2624c799751bb1b8cbdaeb18bd4caf40a

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