Malicious PDF — malware analysis report

Static analysis result for SHA-256 e153abcee1efef97…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 11:57:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34043923d9e6da7c994f58ab66f15f58 SHA-1: 507262a9d36695e050088fb4e1848516a93cca0a SHA-256: e153abcee1efef977b3f0dce9e2a9d13752473b502f49a0bb01431c083a15cea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that explicitly advertise 'free generator / game hack' lures, directing users to a malicious redirector URL. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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.co/app/431946152/hack-on-roblox-free-money-vircle-simulator-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-free-things-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cute-free-outfits-roblox-girl_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hex-number-gives-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-phantom-forces-money-cheat_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robloxian-roblox-hacks-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-bonus_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-get-free-robux-using-injection_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-using-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-pins-for-sale_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-desert-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/alone-in-a-dark-house-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 22048 bytes
SHA-256: ae5bdd5b7af6bcb6cc73afee6536ee0d10d8e63ec2e4a83b3570be18b37840e7
font_01_sfnt_off000061df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DF 19956 bytes
SHA-256: d7d971cf4e5671424cb72879666351a60d2d6a29dcd75c490c65c874fbdd37a8

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