Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fb5fa995c49424…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 05:57:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 02c1bb2e0b3f157d94e300b2be8575ad SHA-1: 5dc794a6d3b1d391d88a0c395308371968ea090c SHA-256: 09fb5fa995c49424df13a0a9e8eafa23c7caa43b11e33643ec5e3e77a64bd951
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector leading to game hack lures. The document body and extracted URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted from this sample, but the embedded URLs and heuristic firings strongly indicate a phishing or scam attempt.

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/406889139/coin-master-hacksco-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/bear-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/followers-generator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/using-cheat-engine-on-roblox-bluestacks_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/synapse-free-download-for-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/auxs-roblox-hack-pack_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-teleplate_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/inside-the-world-of-roblox-pdf-free-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/swiftbucks-hack-roblox_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_off0000323e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323E 22608 bytes
SHA-256: 810893c26aa370cd2f64fca8a2509be20cd6e54f18c8ea9e1e1a1d30b1ba8935
font_01_sfnt_off000064ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

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