Malicious PDF — malware analysis report

Static analysis result for SHA-256 97781bff9128304f…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 19:28:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 22fb49b938d089ebcdceae50e1acefe8 SHA-1: c410862060f6f351d7caf7b85270a4c4636092f2 SHA-256: 97781bff9128304fd4ce158dab4501f1541f97a25dd22a65635e6130ed986d97
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to what appears to be a malicious redirector, disguised as a game hack generator. The document body and heuristic firings indicate a lure for free game hacks, specifically targeting Roblox. The presence of embedded URLs and the ML classifier strongly suggest malicious intent, likely to redirect users to a site that hosts further malware or phishing content.

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/roblox-cheat-engine-noclip-fly-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-no-robot-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-for-kids-net_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-roblox-rose_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-mad-city-hack-deutsch_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hack-wallhack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hacks-2021-epic-minigames_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-use-cheat-engine-65-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-urbis-cheats_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-app-free-apk_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cheat-roblox-2021-argent_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-into-somones-account-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-for-surveys_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_off00002f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F35 22268 bytes
SHA-256: e654fb0acdc0acafcf4807274a8cf3a7eccfb41cf8423ef83546fcad5f5e73c7
font_01_sfnt_off0000609c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 19396 bytes
SHA-256: 88fb366ae49d089af959318d9c890fdca4f526ffa3b97b3067d429ab342c789d

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