Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29f0d41722042af…

MALICIOUS

PDF

73.5 KB Created: 2021-03-08 08:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a20176269a3527923d4d2d00e72fd52e SHA-1: 716a3ee5a323c820afeb82dca37f38115d61f900 SHA-256: c29f0d41722042afc86c4da47992ee1ab1f5840169222e4553c2d505edba8abd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as a phishing/trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on potentially malicious hosting. The primary URL, 'https://maypoin.ru/strik?utm_term=why+is+my+printer+printing+blurry+text', suggests a lure related to printer issues, likely to redirect users to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/strik?utm_term=why+is+my+printer+printing+blurry+text PDF link annotation
    • http://zawugudumi.getenjoyment.net/muzeriki.pdfIn PDF document text
    • http://mafejaruvoje.sportsontheweb.net/is_the_other_side_of_heaven_2_a_disney_movie.pdfIn PDF document text
    • http://nuveclovet.xyz/avengers_endgame_release_date_in_americac5kml.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/how_to_reprogram_my_chamberlain_keypad.pdfIn PDF document text
    • http://kokulotasuz.mygamesonline.org/free_ethical_hacking_course_in_tamil.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/message_to_the_black_man_by_elijah_muhammad.pdfIn PDF document text
    • http://instas.site/wutojosukolug48z0.pdfIn PDF document text
    • http://dimax.website/beziwitedifuvokeoer2j.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/20195040900.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/ebe8f25a-0607-4e4f-820e-234e0af23b91/96422827987.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/andaluza_granados_piano.pdfIn PDF document text
    • http://gegurobaz.myartsonline.com/ilive_sound_bar_not_working_with_tv.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/zulisulopifexeziw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b322a17-a977-40b7-bf87-33752f82f2d6/93571843934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69f39247-e5fa-4683-a429-72d060b2d5a5/what_age_is_percy_jackson_books_for.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/schedule_b_2018_form_1040.pdfIn PDF document text
    • http://titugol.atwebpages.com/lixegejowizutiwiwabo.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/what_does_guerrilla_warfare_mean_in_social_studies.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_off0000e41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41A 5348 bytes
SHA-256: 6e4a17317ce474173d3288dc676d03aadc6dd1e42b6f737de5b738cc05f3bcb3
font_01_sfnt_off0000f636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF636 10204 bytes
SHA-256: 990948cc0bdee29b5260ac858c3062db635c81f47c5d53edbb32b958c3764b95

Open this report in the interactive analyzer, or submit your own file for analysis.