Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d27cf6038544aaa…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 01:39:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f42176b9e8900f76b6d60749d5ae2299 SHA-1: 213cad74080925bb8c241f174d0d24eeb8e1dbae SHA-256: 9d27cf6038544aaaf67519ff11121bd0dd99c37387053ac8dc3080cf4394ab41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with one specifically identified as a malicious redirector leading to a 'free generator / game hack' lure. The document body and heuristics indicate a social engineering attempt to trick users into visiting this malicious link, likely to download further malware or engage in phishing. No scripts were extracted from this sample.

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/free-roblox-jailbreak-game-hack In PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/apk-hack-online-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-into-coeptus-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/bloxland-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accounts-2021-with_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/best-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-adopt-me-money-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-someones-roblox-accouny_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-you-hack-micah-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.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_off000030c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C6 21792 bytes
SHA-256: 169d127245d96401a0b0a3f58e0c79ed420c90d2a4ae9eb89745c2c8c47d6174
font_01_sfnt_off000060d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D6 19104 bytes
SHA-256: 4229b2f26a823b6671c5e5d414a64245b39cd9d877d6163bfc863874e001d107

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