Malicious PDF — malware analysis report

Static analysis result for SHA-256 114fe75631c6e503…

MALICIOUS

PDF

75.2 KB Created: 2021-03-29 04:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 617250a741ec48fcb63d4b737c63a8ca SHA-1: a155e681a62d7a15176e83c06bb302b5b013b20b SHA-256: 114fe75631c6e503e84221fb438c17fdd4a0ef0e9922c095a91546e1b32e855f
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to contain a lure related to printer setup. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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://soxebez.ru/strik?utm_term=how+do+i+connect+my+canon+mg3620+printer+to+a+new+wireless+network PDF link annotation
    • https://cdn.sqhk.co/vadafepagij/gficdgi/xomafonege.pdfIn PDF document text
    • https://cdn.sqhk.co/zamikukodef/ihfxjdf/roblox_music_id_code_for_savage_love.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/43Vgf4r/prince_temple_run_gameplay.pdfIn PDF document text
    • http://rekabiwuxu.22web.org/31186170908.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/bWgcQJm/clash_of_generals_3d_game_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/e6ChiHX/rc_raceway_near_me.pdfIn PDF document text
    • http://emirofficialzm.com/book_of_the_damned_pathfinderh763i.pdfIn PDF document text
    • http://pewekelexu.mygamesonline.org/88779456344.pdfIn PDF document text
    • https://cdn.sqhk.co/xolilipedeko/XMiK84v/75168452297.pdfIn PDF document text
    • http://nubolutlion.xyz/tivulivvd3zy.pdfIn PDF document text
    • http://it50save.info/indirect_speech_exercise_for_class_5egjt7.pdfIn PDF document text
    • http://trydouche.xyz/zovelakejiduxerzbol.pdfIn PDF document text
    • http://makedctl.site/83623487581xswjl.pdfIn PDF document text
    • http://pusovemolexed.scienceontheweb.net/bewepakekuk.pdfIn PDF document text
    • http://zereteleriw.getenjoyment.net/woxovojuduwowipok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kimanaw.epizy.com/jason_and_the_argonauts_2000_watch_online_sa_prevodom.pdfIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_ce1b351219bf446ca009b31cf7e70e53.pdf?index=trueIn PDF document text
    • http://minivenema.atwebpages.com/xaxirisomux.pdfIn PDF document text
    • https://8f6f9f04-f977-4239-955d-f6aecf2dd879.filesusr.com/ugd/81cd61_1ccfc96b89f5420fa089a046a9057881.pdf?index=trueIn PDF document text
    • https://7a3463bf-3117-47cc-940f-ad9d50d05675.filesusr.com/ugd/9f2514_01a69c1e12bc45d5a0e485766b7da827.pdf?index=trueIn PDF document text
    • http://pavabiza.atwebpages.com/banawosujomodexuki.pdfIn PDF document text
    • http://lojokedasu.rf.gd/personality_disorders_dsm_5.pdfIn PDF document text
    • http://kuxomexepus.epizy.com/craftsman_14_electric_chainsaw_parts.pdfIn PDF document text
    • http://vudajerex.rf.gd/ehrc_pregnancy_discrimination_report.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_off0000e5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E9 6204 bytes
SHA-256: c3274518a64611be49897d5559e179c93bd7ce1940e5ab27cb701c53a8d24f7d
font_01_sfnt_off0000faff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFF 10704 bytes
SHA-256: e256f7fe03eac498d828e41d73d3ef8dc1ec45d140e984a0e4d114b7bfb57590