Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1e2537d67b298c…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 15:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8c4b10bff29fdbe96bd577e68ab99cb8 SHA-1: bd079781437f74a9a7f3b43bc438e0a966731b13 SHA-256: 8c1e2537d67b298c86b48a86bc5a07327a0e6cbc4c8a3c62c990b2d334810791
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs that redirect to a known malicious domain, masquerading as a game hack or generator. The ML classifier also flagged this PDF as malicious. The primary lure appears to be related to 'Robux' and game hacking, suggesting a phishing or scam attempt to trick users into visiting the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/431946152/play-games-for-robux-game-hack In PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-admin-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/jojos-bizarre-adventure-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-use-cheat-engine-on-roblox-undetected_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-iphone-cheats_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-be-a-real-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/2021-free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-counter-blox-roblox-offensive-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/glitch-foe-free-clothes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-shirt-templates-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/https-www-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-free-mobile_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/kazok-youtube-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/https-free-robux-cf_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/are-minecraft-realms-free_GM479516143.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_off00003013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3013 22608 bytes
SHA-256: 8a62ac03b9c51563dba58d4ba5204faafad78f5e9c23a6750ffa4189180fcc9e
font_01_sfnt_off00006262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 19384 bytes
SHA-256: e393570b0d60ff7b9dd7380b11e6309cd3d6d4e66dbc1de9df81cd5339ea4d07

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