Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d4e71d45325224b…

MALICIOUS

PDF

69.2 KB Created: 2021-02-22 19:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b6e903bf80b3ea79900e896f59bc2adc SHA-1: 4a915c3e12e6cc692bb5999bbb0135f835c0b0bd SHA-256: 4d4e71d45325224b18637ed3e2d36b18737d2ea154f177919dbff506d4315835
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=thank+you+for+your+cooperation+robocop PDF link annotation
    • https://cdn.sqhk.co/xeposetuge/vhe8NGc/share_it_web_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kanereneb/biihhg8/cars_for_sale_craigslist_chicago.pdfIn PDF document text
    • https://zunepijubu.weebly.com/uploads/1/3/3/9/133986973/sibipal_bumazuxunifa_vodidinu_jiwisus.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzaxube/1FijhX0/criminal_case_mysteries_of_the_past_case_41.pdfIn PDF document text
    • https://kusafulidofet.weebly.com/uploads/1/3/4/0/134017607/givezo_vanewu.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/hjgd1SZ/1203627123.pdfIn PDF document text
    • https://cdn.sqhk.co/fafaviwi/du3iijc/12018513696.pdfIn PDF document text
    • http://zikapipumimapo.22web.org/answers_for_what_are_your_strengths.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/jfidJeL/printer_3d_model_online_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/nepusoliweda/rIjhgdU/top_20_country_music_2020.pdfIn PDF document text
    • https://pojalurerisufi.weebly.com/uploads/1/3/4/1/134109142/vejubol.pdfIn PDF document text
    • https://lumevukivejus.weebly.com/uploads/1/3/0/8/130874583/250558.pdfIn PDF document text
    • https://telonilinip.weebly.com/uploads/1/3/6/0/136050587/8196214.pdfIn PDF document text
    • http://tasonilevibinu.22web.org/short_story_for_learning_english.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/hdHHjax/falling_ballz_all_balls_unlocked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gorevifero.epizy.com/chupke_chupke_1975_mp4_movie.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_off0000d415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD415 5148 bytes
SHA-256: f4e34a76a62eaab7e8de13c817815d7bab0cf2fb27e55e50b2614184135247aa
font_01_sfnt_off0000e59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59D 9928 bytes
SHA-256: e8284811552f15e152a2d681b3352e31a9179a65f1f7f0085ff145e7aa4753c4

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