Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6cfecfef54ecd34…

MALICIOUS

PDF

79.5 KB Created: 2021-04-28 06:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4d308b615772ec2955fec69810c03143 SHA-1: ee0a21afcb1b598996e392a77e91cb1f976eee43 SHA-256: e6cfecfef54ecd344a0bbba8aeaa2d389360639b2859b004c522b0d0499951a5
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains text related to 'how champions think to win', likely a lure to encourage clicks on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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 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://botokaw.ru/strik?utm_term=how+champions+think+to+win PDF link annotation
    • https://kuzapulekoxiror.weebly.com/uploads/1/3/2/6/132681507/fapur.pdfIn PDF document text
    • http://blubadgehelp.net/kallis_sat_practice_test_3_answers8stp5.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/abas_erp_handbuch.pdfIn PDF document text
    • http://vizionsmc.net/86457947913vrru7.pdfIn PDF document text
    • https://cdn.sqhk.co/vetesomiw/haS0Qhh/zawivorikok.pdfIn PDF document text
    • https://cdn.sqhk.co/xekutenupi/8RjhM5T/besed.pdfIn PDF document text
    • http://businessmentality.com/beeman_sportsman_rs2_series_manual9ukxd.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/gcididn/x_dns_proxy_vpn_review.pdfIn PDF document text
    • https://berizezemimuto.weebly.com/uploads/1/3/2/6/132695806/653b101557e0.pdfIn PDF document text
    • http://xviiivbgz.com/how_to_program_dish_network_to_tvomjc5.pdfIn PDF document text
    • https://cdn.sqhk.co/faroziwe/h272d90/nefilaloba.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/77892669592.pdfIn PDF document text
    • http://datinge.site/what_is_the_book_the_magic_mountain_about7h4x1.pdfIn PDF document text
    • https://cdn.sqhk.co/kidimezamos/m7YKT0l/55829564366.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/fC8jced/sovibukumuzipuxekag.pdfIn PDF document text
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/pemekafe.pdfIn PDF document text
    • http://lexaxak.mywebcommunity.org/kamomegikuzonuger.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/gcggLwV/music_line_3_game.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/cMicgca/bike_racing_3d_game_download_free.pdfIn PDF document text
    • http://santecmb-sarl.com/xofagetki2y.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://dvertsoff.ru/mufepamcui6.pdfIn PDF document text
    • http://wofurasosezisax.mywebcommunity.org/nicomachean_ethics_book_7.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/qginjjE/segepiwagawugemefulilob.pdfIn PDF document text
    • http://najisemure.medianewsonline.com/curso_bsico_de_ingls_para_adultos.pdfIn PDF document text
    • http://copyrightram.net/puvomibaboczhiq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85F 5164 bytes
SHA-256: 0f9790164787ab35c679f71cc7a763f0c4133966646b9684d4d361ca856b9a84
font_01_sfnt_off000109db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DB 11560 bytes
SHA-256: ad6acacc95e89fd4d3c6ead1fd3e28062654dc791a6e673c711f2a502f3c1555