Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d2229d00f89abf…

MALICIOUS

PDF

66.5 KB Created: 2021-03-08 20:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d5906c2b8c6d692c8f4ce3873d022c73 SHA-1: 8136f4b9c5d339c8f11331a87698ba4d825bdcbd SHA-256: f9d2229d00f89abff71c983f8c49c832ee03abf33e4109a1033b23ebe86cfa39
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://dugedepap.ru/wix?keyword=sadlier+oxford+vocabulary+workshop+level+g+unit+1 PDF link annotation
    • http://helper-badges.com/furapokiqrhhw.pdfIn PDF document text
    • http://good-production9.site/bizevojozuppw6g7.pdfIn PDF document text
    • http://fitokapss.xyz/rasatuxiwerejovezatea9a.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/58OQifA/74720785514.pdfIn PDF document text
    • http://dashcamtopbest.com/modal_verbs_exercises_bachillerato_with_answers9oyaa.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/ii8gefK/wabinagopusuxenod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485718/normal_60272e6589058.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416501/normal_5ff3d34f3096d.pdfIn PDF document text
    • http://expressday.online/728704644249te4a.pdfIn PDF document text
    • http://leopards.space/tenozikumouf9hb.pdfIn PDF document text
    • https://cdn.sqhk.co/kugugofawaz/dgiiifd/stick_cricket_super_league_tips_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/gehcjji/new_english_songs_2020_mp3_download_hiru_fm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e17b0b31-a539-4655-9c88-c2ea27ac5ec5/x_runner_tacoma_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58c90e53-4946-47a6-ac93-1d481f17650b/basic_knowledge_of_c_programming_language_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6998e99d-c66f-4529-89e5-92c2653d9258/52818732620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff126da8-e11a-4eb0-b134-9f8de42cb166/61209270132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758f1cf3-3929-4d8d-a3b4-5b13c356fcc1/is_curse_of_strahd_good.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deca1900-9ad8-4db1-86ef-86636336ecb4/how_to_do_backwash_filter.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_off0000c825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC825 6096 bytes
SHA-256: 5837261b9af61ed759d4eec79001f7f18f6bcaa1a2e9846c8f6dc6ccb19afd6a
font_01_sfnt_off0000dd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD00 9336 bytes
SHA-256: 33a5d80a2c8b6ab96f616c7af057a28ef91f98c783f6ced87154ed7228b7d890

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