Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d0516c20678afc…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 16:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 04037ed8c5bef0b3f1827e27a53ad052 SHA-1: a9d2fb3777419e44cc7913ca98455e0a5e5ee767 SHA-256: 89d0516c20678afc513b23915ac95acaed02758ed6724d0490af7481c80e2acd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a high-confidence heuristic identifying a lure for a "free generator / game hack" related to Roblox. The document body also contains similar lures and URLs, suggesting a phishing or scam attempt. Although no scripts were explicitly extracted, the nature of the lure and the presence of external links indicate a potential for downloading a second-stage payload or redirecting to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.co/app/431946152/roblox-free-robux-password-required-game-hack PDF link annotation
    • http://vetmed.fkh.unair.ac.id/repository/best-roblox-games-free_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/robloxjailbreakfreehacks_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-robloxlover_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/gaming-app-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-use-hacked-word-generators-on-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/prison-break-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-walk-through-walls-on-roblox-useing-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/give-free-robux_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_off00003193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3193 22164 bytes
SHA-256: ec81fb9cfcedb292318de489d0ffddda09a2a7cf0a28c2bb24489f7eaa0ca360
font_01_sfnt_off00006252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 19572 bytes
SHA-256: 66b2eaafc228b31319dc4ee22f51b0612e10f3ff829270a5ae8a0a5af0eb9a61

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