Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f0f741fcf791e2…

MALICIOUS

PDF

72.7 KB Created: 2021-03-11 12:56:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2cf316e3aa417173321e91337e32f7c5 SHA-1: d42d58b1a6e7dd90ee35ab774a14c382137ee5cb SHA-256: 44f0f741fcf791e250aa2ab077d1d5967e327af352ab3d959de0fb849c51152f
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://botokaw.ru/award?keyword=dynamics+of+machinery+vibration+pdf PDF link annotation
    • http://gozipoxeget.iblogger.org/letasoft_sound_booster_key_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_603a75fcebc0b.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/varon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478703/normal_6031b6e1996a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5fec5a51d2c39.pdfIn PDF document text
    • https://kowezuvive.weebly.com/uploads/1/3/4/6/134603832/kufamaxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475208/normal_601a3a105ee2f.pdfIn PDF document text
    • http://zugemuvireri.22web.org/70415024357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426955/normal_5ff59c458a0ee.pdfIn PDF document text
    • https://rolutadaneked.weebly.com/uploads/1/3/2/6/132681657/zibevidagavelid_zigew_wowoxatemevin_menukupukimowe.pdfIn PDF document text
    • https://toxupenowa.weebly.com/uploads/1/3/4/0/134042648/7106855.pdfIn PDF document text
    • http://meboxofunufox.iblogger.org/attack_on_titan_season_4_anime_2_you.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455183/normal_602ce56bbbecb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414682/normal_5fc685d345a92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/boond_boond_song_roy_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa292620-38f6-4b38-8b62-fb64b823349b/how_much_are_catalytic_converters_worth_for_scrap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b28bd4af-e4e8-4010-ac35-21be35a19b03/mous_-_protective_case_for_iphone_11_pro_max_-_limitless_3.0.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/tazojaziranoget.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/new_york_state_mandated_reporter_hotline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/097f5c2d-2ae8-492a-b7b8-15f4d40a590c/bollinger_bands_indicator_settings.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/18936758127.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_off0000df81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF81 5664 bytes
SHA-256: 33b994edfddfcf3529953e0ce445b954d57fd52ac15c7884512d3cf3ac513a37
font_01_sfnt_off0000f2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AE 10196 bytes
SHA-256: 3e5d7916ba454cbced846af16856da6ac9edff1e52cd0f4bfe8355a7b8ea1830

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