Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7ab40392b495bf…

MALICIOUS

PDF

67.8 KB Created: 2021-02-15 00:27:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fe8f1fa5796c6fcd1465cd316c2af766 SHA-1: 1f5c26d3f7807ae0a82866af310d808e96ae8df4 SHA-256: 3d7ab40392b495bf7f8e479d1005b459eeb7ad3d6724dd394438c61c7e69541f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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/wix?keyword=agario+unblocked+66+at+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490251/normal_601872f78ade7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481663/normal_5fdf18a8e1859.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/yEB1mib/vezoxamepepim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455645/normal_5fefe08a64d13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446263/normal_600926037a77b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489061/normal_5fd7f84471b96.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/jfig4if/nurapakis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464534/normal_5fd93b6e98d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_601aa0db5ebf2.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/ROugfJc/85227797315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_6013138174fb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499002/normal_5fe0b56fd1f52.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/VijeFDY/cafe_racer_bike_seat_price_in_bangladesh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kikexufan.epizy.com/35263034040.pdfIn PDF document text
    • http://dasilumenuf.rf.gd/peworurajerew.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/battlefield_2_mod_project_reality.pdfIn PDF document text
    • https://s3.amazonaws.com/natewared/akshay_last_performance.pdfIn PDF document text
    • http://jozizirepimetel.rf.gd/27593355068.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/cumulative_frequency_distribution.pdfIn PDF document text
    • http://bivadalov.epizy.com/9982204736.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/child_protection_legislation_mandatory_reporting.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_off0000cc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC55 5548 bytes
SHA-256: 44a24579dddc7f95a6f52eb88012188620da7a8ceab5d3f770ee9c3faebd25b9
font_01_sfnt_off0000df2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 10044 bytes
SHA-256: a29b8ff48b91eeb6242e68938c7841dbd682a414197a1968902a58db320b4dc3

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