Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4c32feb09170eb4…

MALICIOUS

PDF

73.5 KB Created: 2021-02-25 06:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: db4d890af30e50deb8bea5104c856f5a SHA-1: 73f275789e837037c8b78fc727f60860f0c78cc7 SHA-256: b4c32feb09170eb4255ae2ba50b961ad57df4e0620fa9595567873249f6087a0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=what+is+the+symbolic+meaning+of+a+white+raven PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5fff340e02cdb.pdfIn PDF document text
    • http://jiteruruw.sportsontheweb.net/what_is_the_dramatic_irony_in_antigone.pdfIn PDF document text
    • https://jomufoxubibad.weebly.com/uploads/1/3/1/1/131164047/pubegaladegefitetan.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/dungeons__dragons_3_the_book_of_vile_darkness_cast.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/60545377475.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/a_long_obedience_in_the_same_direction_discipleship_in_an_instant_society_by_eugene_peterson.pdfIn PDF document text
    • https://pupazugosabi.weebly.com/uploads/1/3/4/8/134868946/4068555.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/83503313052.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368506/normal_60079969ae8fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446782/normal_601abb39d6fac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452850/normal_602abe1f02205.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/will_no_game_no_life_ever_get_a_season_2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kofaxafogi.myartsonline.com/10402460457.pdfIn PDF document text
    • http://girofili.myartsonline.com/how_to_connect_samsung_xpress_m2070w_to_wifi.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/71666142622.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_off0000e0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DA 5700 bytes
SHA-256: 659a740db43665dbd4d8c483d616030e2133af664d7f0c8f309ad9aaa01745ff
font_01_sfnt_off0000f440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF440 10688 bytes
SHA-256: d31f45bca8160e6401009ed4b48f5a4d98a5cc828569499ed632f1ee8be5ecaa