Malicious PDF — malware analysis report

Static analysis result for SHA-256 68df7cb2e8f87110…

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 11:22:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a7c55940a01fba92023632310c2db7ae SHA-1: 54a26bd6513f351a2e89d7d1b488e490e77b51f6 SHA-256: 68df7cb2e8f87110c62235ec5423a816c76081fb613a32d8dd72553c4b7a6eee
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lure users with game hack promises, a common social engineering tactic. The ML classifier strongly indicates malicious intent, and the heuristic firings confirm the presence of deceptive links. While no scripts were extracted, the document's structure and content point towards a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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 http://netcdn.tw/app/406889139/coin-master-haktuts-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/400-million-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-roblox-iteams_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-accpunt-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-skywars-hack-trke_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-bee-swar_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-aand-true-ways-to-get-robux-windows-10_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-to-bypass-roblox-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/como-ser-hacker-en-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/game-toolbox_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-robux-hacks-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-boombox-games-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-models-viruses-keep-coming-back_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/porque-hackean-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3114 22520 bytes
SHA-256: a7a310d75d2568760e554c77f80dadc1f57956ef8bd79b7ee8bcde2097b65575
font_01_sfnt_off0000635e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635E 18144 bytes
SHA-256: 8daa1128151207aa24d82529a6eedb767dde599c849e3c144e38d1777f737c1a

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