Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f4d56922ef2825…

MALICIOUS

PDF

78.0 KB Created: 2021-03-24 09:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18e79b8fed3e9747fc9e34d38a33055e SHA-1: ec22b344878df36751467c6499a955617a6ede1f SHA-256: c6f4d56922ef2825fca5f7b914f223966faac7f9a0788bfecda55a9912a97c7a
156 Risk Score

Malware Insights

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

The PDF file, disguised as a 'Dying Light strategy guide', contains numerous external links, a technique often used for SEO farms or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically flagging it as a phishing or trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/wix?keyword=dying+light+strategy+guide+pdf
    • http://tideboweped.medianewsonline.com/analytic_hierarchy_process.pdf
    • https://nobewiga.weebly.com/uploads/1/3/5/3/135315034/6958703.pdf
    • https://fuwowomazusora.weebly.com/uploads/1/3/4/0/134000162/poxaxonigaj.pdf
    • http://dakajak.medianewsonline.com/bd_chaurasia_handbook_of_general_anatomy_8th_edition.pdf
    • https://vuginavoji.weebly.com/uploads/1/3/0/7/130775358/fbcfd622ed1.pdf
    • http://xexapitanegis.getenjoyment.net/al_quran_free_download.pdf
    • https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/pevixo-zoxigabalupub-wabipomi-naguw.pdf
    • https://fagodajugip.weebly.com/uploads/1/3/1/6/131606000/waxibogedilex.pdf
    • http://terugate.mypressonline.com/lion_the_witch_and_the_wardrobe_movie_review.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rubidokezive/guwotubogabalitoxomeza.pdf
    • https://s3.amazonaws.com/tesotiwapax/avery_labels_5366_word_template.pdf
    • http://nuvefugokudob.epizy.com/who_is_the_current_nigeria_army_chief_of_staff.pdf
    • http://biwosagamivi.myartsonline.com/l2_desktop_support_engineer_interview_questions_and_answers.pdf
    • http://wovuluvoju.onlinewebshop.net/super_mario_brothers_switch_2_player.pdf
    • https://s3.amazonaws.com/babuxufarizuxur/iphone_8_plus_whatsapp.pdf
    • http://kuzelewekupe.epizy.com/what_foods_to_avoid_for_low_fodmap.pdf
    • https://s3.amazonaws.com/wegugus/72576538876.pdf
    • http://sidepojedava.myartsonline.com/jupagemogamixa.pdf
    • https://s3.amazonaws.com/sazixipame/bizadafaramujoteje.pdf
    • https://s3.amazonaws.com/xowasosuf/mikeg.pdf
    • https://s3.amazonaws.com/pokorevalaxex/addresses_in_australia_format.pdf
    • http://jajogagek.atwebpages.com/font_awesome_download_icon.pdf
    • https://s3.amazonaws.com/pidufozu/chemistry_textbook_class_11_state_board.pdf
    • http://jaweratiz.atwebpages.com/xovuzutozekotuwavevoro.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4a1.bin
f9adacb863428d81225be30982476408f81cf550a15f19d3bfb240115cd28f6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A1 5404 bytes
font_01_sfnt_off0001070d.bin
89f71257250025d37525b2c2c63c54cc67f67f477858de4b2f9901d9c2165936		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1070D 10196 bytes

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