Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2f1f9a36409326…

MALICIOUS

PDF

86.0 KB Created: 2021-03-06 03:02:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 958d3dc8c770458c998314d7e0d09744 SHA-1: 29b8af7c0263c6400f52a21ab71d79836463bfa9 SHA-256: af2f1f9a3640932680df5b1656cf38c7db680500a46b05626ea1d73576f26222
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or unknown reputation domains, suggesting a phishing or malware distribution attempt. The heuristic firings, particularly 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION', strongly indicate malicious intent. The document body's reference to 'coc hack download 2020' further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://vilenefex.ru/wix?keyword=coc+hack+download+2020 PDF link annotation
    • https://cdn.sqhk.co/vasegodesazu/7HBeUiU/41297859045.pdfIn PDF document text
    • http://tuworiki.22web.org/clipsal_ceiling_fan_manual.pdfIn PDF document text
    • http://jobauthor.online/top_free_music_apps_offline6vahp.pdfIn PDF document text
    • http://yandex-delivery.cc/kegomubigizofepenigudidy27ae.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/gcjeP4e/25318055365.pdfIn PDF document text
    • http://kulokozataxat.22web.org/vewexugu.pdfIn PDF document text
    • http://phrensy.co/how_long_should_you_study_for_driving_testvfe7j.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/Yghghif/nomesanapojavaneronibasu.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/2655177033.pdfIn PDF document text
    • https://cdn.sqhk.co/bobofibu/OIqSNij/87876988936.pdfIn PDF document text
    • https://cdn.sqhk.co/susorajin/gcUVehh/82507183699.pdfIn PDF document text
    • http://sellamorem.com/hp_laserjet_enterprise_p3015dn_printer_service_manualc9ell.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/EyBhjyM/where_we_go_pink_karaoke.pdfIn PDF document text
    • https://cdn.sqhk.co/dokamaruxif/uUeW8hc/69557476651.pdfIn PDF document text
    • http://24goodstore.site/how_to_use_the_taylor_series8t5iy.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/gfQiRjh/nfl_cardboard_cutouts_in_stands.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/yHCTwjc/scorpion_moves_mortal_kombat_x_xbox_one.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/how_many_times_can_you_day_trade_crypto_on_robinhood.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bodotekufuw.rf.gd/lilikujunezox.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/gararalaselowujofazusuzom.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/26675912760.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/massey_ferguson_parts_manuals.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/bubble_shooter_genies_hack_apk.pdfIn PDF document text
    • http://wifepex.rf.gd/brother_pe770_for_sale_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/nofen.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCB 5088 bytes
SHA-256: 1313b68e6e6e3d5afdbffefc3fb1803eb673bed7c0521a7d0108c190035aac30
font_01_sfnt_off00011128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11128 10240 bytes
SHA-256: 01877d66fa6f9a3c0dd479d7912fb76ca0040a678f94a5f50d99f6f985ff9d28
font_02_sfnt_off00013466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13466 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15