Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa261c2cd60122c…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 03:07:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ad97f4cd63a448b920c62124358c25c6 SHA-1: c07c8e344230ec5e3994375eba11b584c42e2243 SHA-256: cfa261c2cd60122c7427243076792bcfc0531e75e941b83f9add8a1c466b0812
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and text related to obtaining free in-game currency, specifically for Roblox, and is flagged by an ML classifier as malicious. The presence of embedded URLs and the document's theme strongly suggest a phishing or scam attempt designed to redirect users to potentially malicious websites. 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/how-to-get-free-robux-without-download-apps-or-survey-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hacks-for-dungeon-quest_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/where-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-w-roblox-waiting_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-666-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/infinite-moneyz-roblox-injector-hack-pizza-place_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/invited-free-robux-glitch-by-unknown_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-speed-hack-las-vegas-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-para-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-cheat-engine-noclip-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-rap-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-mad-city-money-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/vheachle-simulator-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-gift-card-codes-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-restaurant-tycoon-free-money_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/bux-free-robux_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_off00002f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6E 22272 bytes
SHA-256: 7797336a7fc5a97bf5ec6e2f0c498c2991416bcd98d3a474ac7dd0c332183d5d
font_01_sfnt_off000060dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 20352 bytes
SHA-256: d8756e6af156b5e47b0cb2729479c2858110a61e10a0d8d2ed7f250617cb02ae

Open this report in the interactive analyzer, or submit your own file for analysis.