Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f08565eb86ea2f7…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 06:19:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a3419284b9df0b99d614e2fe38e76205 SHA-1: 6d4c2642175b899c839d33106d5b0ed09a32520b SHA-256: 9f08565eb86ea2f73c0dbd6cf56c25c5c9100b3c5b9eb0c2422b01d9096999e2
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent external URI pointing to a download site, likely intended to trick users into downloading malware. The ML classifier strongly flagged this PDF as malicious, and the document body's content about free game currency further supports a phishing or scamming attempt. No scripts were extracted, but the presence of external links and the high ML score indicate a high likelihood of a malicious payload being delivered.

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/free-account-that-has-robux-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-autofram_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-cheat-engine-alternative-apoc-rising_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-p-astebin_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cheat-engine-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hacks-for-sprinting-sim-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-vip-server-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-pokemon-go-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-stop-roblox-hacking_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-and-bc_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-coin-master-spins-blog_GM406889139.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_off000030d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D2 22768 bytes
SHA-256: 5e553b2edd2d7ab3c769d664a40b2f6eaa14d7af62d4b6570b707c8f9aa1fec3
font_01_sfnt_off000063bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BD 18988 bytes
SHA-256: 316d32a9d60b220564393988375cee22647865a914646068c693aa79350d4e96

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