Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd999b3fa59c822…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 11:10:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f168a5683ffa980b45909f7380a675e SHA-1: 7d1ef1cde19b397386d63274327cac87adbd52f6 SHA-256: 3dd999b3fa59c822dfacdd455ab693debb556318cfa180c560cf9273163f1eaa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors and game hack lures, specifically targeting Roblox and Coin Master. These links lead to further malicious PDFs hosted on the dirigentigiustizia.it domain. The document body, though partially corrupted, contains references to 'free generator / game hack' and a URL that aligns with the malicious redirection heuristics. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-boy-outfits-free-game-hack In PDF document text
    • https://dirigentigiustizia.it/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-roblox-menus_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/tiktok-free-code_GM835599320.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/roblox-cheat-enginefor-rodebux_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_off00004f4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F4D 27404 bytes
SHA-256: 7eddef69b7e35b2446c3abf0ecb186b8df6beabc584aef8a07e7288de5559109
font_01_sfnt_off00008c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C85 18492 bytes
SHA-256: 7855c0b61f91082c60632f2446ab2abf025f860a5e0738bd5d8d50557a895015

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