Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c89667542a2e99…

MALICIOUS

PDF

71.5 KB Created: 2021-02-15 21:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 853b1b2beca58c803064c27d3b6f2f5d SHA-1: 19948bb2fe086f91e60457bd598e84dd625fa12d SHA-256: f6c89667542a2e99a973d1974f2733792c755d9a8d94038930b0499704021b76
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=purdue+owl+writing+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378836/normal_5ff547865fef9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_601e4605aef49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_6027685c32d0c.pdfIn PDF document text
    • http://experiment.website/269690791345z49y.pdfIn PDF document text
    • http://roflan.site/cessna_150_pohhfqvd.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/1liejbE/poe_elementalist_blade_vortex_3._12.pdfIn PDF document text
    • http://jewuzalozegeso.iblogger.org/fire_mage_leveling_guide_vanilla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393488/normal_60186065791cc.pdfIn PDF document text
    • http://4kuhd.me/museum_collection_stardew4bn7u.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/b3Jgdyb/moto_clock_widget_xda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421957/normal_5ff9ff7f76597.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_600c9be213e39.pdfIn PDF document text
    • http://yesitalia.fun/51981673024aqoz2.pdfIn PDF document text
    • https://cdn.sqhk.co/nadudegimew/igLplhc/hot_wheels_ultimate_garage_gorilla_replacement_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/rkFjdjg/screenshot_recorder_free.pdfIn PDF document text
    • http://mirror-x.org/85728764681pwb3s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465127/normal_60070020c8f4d.pdfIn PDF document text
    • http://airet.space/the_third_party_mangac7sn0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dedagujes.epizy.com/konjac_lasagne_sheets_coles.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_off0000de13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE13 4696 bytes
SHA-256: 16f18b612ff92c45f0c59b2b962ae027a909a3c41387da9eec1f25cdf75cb697
font_01_sfnt_off0000ee30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE30 10196 bytes
SHA-256: 51dc8d2fe7934ec0d6a8d5d37f82ba3e64166631959db8bae9e2cac563868a1e