Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa7d18112b9b0f7…

MALICIOUS

PDF

72.7 KB Created: 2021-02-17 16:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5420ffdaf0bcede17b5a18f12d93ece3 SHA-1: a714c6f1f8326bbf2cce454711cbfe1f42ea8a64 SHA-256: 0aa7d18112b9b0f7f966f657c90b6a8ef0d21c34b75d6d4c2ba15dcf07b8d455
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://druttle.ru/wix?keyword=animal+jam+secret+codes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425483/normal_602aa920959de.pdfIn PDF document text
    • http://rezonansmusic.com/tadawobimetepowilub72gvm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493597/normal_5fdbe22539c37.pdfIn PDF document text
    • http://zatoboyvibor.fun/rane_62_driverjp36z.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/XjduIjj/police_officer_costume_womens.pdfIn PDF document text
    • http://gratoramaa.website/cosine_rule_example_and_answerr4hlc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406497/normal_6007e15fccb3a.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/hejd8je/zijusorarejuxokosukipak.pdfIn PDF document text
    • http://kpupnov.pro/808591995724cdnq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zumebixakefeta.epizy.com/aimbot_roblox_island_royale.pdfIn PDF document text
    • http://wepinipinalojud.epizy.com/mapiwuserevuku.pdfIn PDF document text
    • http://tixelupaninaber.rf.gd/96034701717.pdfIn PDF document text
    • http://nujobig.rf.gd/pronote_cahier_de_texte.pdfIn PDF document text
    • http://bobujosu.epizy.com/13648533407.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_off0000d4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D9 5152 bytes
SHA-256: c07b2ea139c28e4a56e560b87f5f3fbab926298c718d60adf8c749dbda6d6c50
font_01_sfnt_off0000e63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63B 2252 bytes
SHA-256: f3ffe4ba3621d765656d78aaabd71fd798feab98c1821a744cf45e925a576ee8
font_02_sfnt_off0000f07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07C 10412 bytes
SHA-256: da9316d1a125c093b3217300c7412a6d4dce16d5070c0503b7fb725c882d7d7b