Malicious PDF — malware analysis report

Static analysis result for SHA-256 10295a633cc2620a…

MALICIOUS

PDF

76.4 KB Created: 2021-03-21 02:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 318b6ed49fe07515c9c6af1884e5031c SHA-1: d6b8caabc8a4c33cb7b30ba786f5a86f090f0140 SHA-256: 10295a633cc2620a1a0063d60cfdd854140031258cdda57da92ef9d97785d035
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file is identified as malicious by ML classifiers and ClamAV, and contains numerous links to disposable domains. The document body, though heavily obfuscated, suggests a lure related to 'Wow classic addons leveling guide'. The presence of a link farm on disposable hosting indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://soxebez.ru/123?utm_term=wow+classic+addons+leveling+guide
    • https://fugurisugo.weebly.com/uploads/1/3/6/0/136086283/bdf2168bb554cd.pdf
    • https://guditeni.weebly.com/uploads/1/3/4/5/134529862/9a8f83.pdf
    • https://zagefejov.weebly.com/uploads/1/3/2/7/132710748/5065769.pdf
    • https://xuniwinasifobip.weebly.com/uploads/1/3/5/3/135302293/vujik-betaxokivilu.pdf
    • http://perfectiona.online/jukanawopogu4b8yh.pdf
    • https://cdn.sqhk.co/gazejuruni/0gfVIge/77_delicious_recipes_lemon_brownies.pdf
    • https://cdn.sqhk.co/koporikog/QgiqHOY/zoxaputusijiroli.pdf
    • http://unityfree.xyz/6396280475sagkc.pdf
    • https://laratafikerela.weebly.com/uploads/1/3/4/8/134886088/satogufemipafafokes.pdf
    • http://tevaruv.sportsontheweb.net/sixapukezobe.pdf
    • http://dumanejixaw.66ghz.com/company_authorisation_letter_template.pdf
    • http://discount50it.pro/gosigivolalexokupixiv91yp.pdf
    • http://keniworu.mywebcommunity.org/31060057544.pdf
    • http://bulubuzigajuzar.getenjoyment.net/advanced_english_prepositions_exercises.pdf
    • https://cdn.sqhk.co/kukugejekibi/bhijeta/strategic_planning_process.pdf
    • http://doordash.link/45336389158otscp.pdf
    • https://cdn.sqhk.co/sipobufiw/nhcBjbe/download_game_robot_crash_fight_mod_apk.pdf
    • http://xapowuxif.mywebcommunity.org/dark_force_rising_plot_summary.pdf
    • https://cdn.sqhk.co/fopeziriga/ibUEhfC/53283852983.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vipoxegoto.rf.gd/balanitis_candidiasica.pdf
    • http://ruzojonawa.epizy.com/imperial_march_bass_clarinet_sheet_music.pdf
    • http://puribisipup.atwebpages.com/hardest_christmas_word_search.pdf
    • http://wajodojizofe.epizy.com/informacion_sobre_el_australopithecus_afarensis.pdf
    • http://fuzinokozekinuk.rf.gd/50194220465.pdf
    • http://mabulipazef.epizy.com/51129665342.pdf
    • http://nogojituwizax.epizy.com/blur_photo_community_apk.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_off0000ecc1.bin
69d3425979f7add32da8a91e9bd55a7f01d2441f8ee4f71a3e6e8859db5953d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC1 5176 bytes
font_01_sfnt_off0000fe92.bin
affeb27ae6d4dee303ebd5dc716edafbbd7c47fef7b7cea71db68006e8e7787b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE92 10992 bytes

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