Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad939afef2d8900e…

MALICIOUS

PDF

72.7 KB Created: 2021-02-27 15:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6a5be6b6a732a8ea0afd033aa4ab725d SHA-1: 6f9ada3ec98900575b4e70e8bee7b12576743aeb SHA-256: ad939afef2d8900e44efd14c82ceaadfff70eb77e9e3681938ac3f4e199f4103
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://leonvi.ru/wix?keyword=sky+force+cheats+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475204/normal_5fe799a0e2cc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454544/normal_5ff65e2ad1990.pdfIn PDF document text
    • http://wazixusazajafem.22web.org/reporting_of_hsn_code_in_gstr_9.pdfIn PDF document text
    • http://gegetamuwu.iblogger.org/panasonic_50_plasma_tv_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/woluzadeviv/COghekF/cotton_traders_water_toggle_trainers.pdfIn PDF document text
    • https://cdn.sqhk.co/vagofedewat/LoZpNhb/86504512580.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493867/normal_5ffaaf0060154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465136/normal_600fc59417fe8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414335/normal_5ffb30f26f8a8.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/bjhzZhj/vewemiwimimazatinukob.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/atgf69T/91366598143.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://durapufagumupo.rf.gd/86369661876.pdfIn PDF document text
    • http://wevedikelu.epizy.com/saforaronadorofamaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/channels_types_and_forms_of_communication.pdfIn PDF document text
    • http://bixerexexotepe.rf.gd/wawulupupitapaluwagerogip.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/89749336084.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/favagofezujinij.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/anarchy_in_the_uk_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/gewida.pdfIn PDF document text
    • http://vovokab.rf.gd/filuzonidezuru.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d33f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33F 4888 bytes
SHA-256: bb7c6ffe0b9d74075a38a9e4e05f79ac6506da7e50d9ebe629c9ca377806f891
font_01_sfnt_off0000e3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EB 10484 bytes
SHA-256: 676bca8bd4cf292d4f9da634882ca1cc8fd89848daa43bd2323cd67486c19ed8
font_02_sfnt_off000107c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C0 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71