Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4eaa4075bd7a5d8…

MALICIOUS

PDF

47.5 KB Created: 2021-06-09 14:50:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 590349c51c6074921a6a97f496003caa SHA-1: 1bb650e6e0da80609d1db90a28391da00b74b3f8 SHA-256: f4eaa4075bd7a5d86322045e6e8a46499dce461b5c632b1b741ecc7073012ac4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as offers for game hacks and free currency. The primary lure is 'How To Hack Unlimited Money In Ultimate Driving Roblox', directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit users into visiting malicious sites, likely leading to further malware downloads or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/how-to-hack-unlimited-money-in-ultimate-driving-roblox-game-hack In PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/karinsupersweet-offers-200-000-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-code-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-roblox-no-hack_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/is-there-a-safe-way-to-get-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
stream_004_off00005452.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5452 26976 bytes
SHA-256: 235235d1b576f5651436e46b6e881fa8705398567171703d747a176e38b2d891
font_01_sfnt_off000091ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91AB 20136 bytes
SHA-256: 0e854eddc4156dbc049977ec5ed84a626954afc773b4d8f04265d2ee384be3ba

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