Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9599aa74bcbd203…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 15:54:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 599d9311f15dc36f92e63b9c1018f28e SHA-1: 32960fdbb44294c97348a50f6f97a59cae855150 SHA-256: b9599aa74bcbd20352cc69b94a23101bf59a4f7d623d89553fa95f1175aba983
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, that lure users to a 'game hack generator' page. The document's content and embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of embedded URLs and the lure indicate a malicious intent to redirect users to malicious infrastructure.

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-cheats-november-2021-game-hack In PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-hack-roblox-for-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-get-everything-free-on-roblox-2021-april_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/robux-promocode-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/free-robux-no-ads_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-hack-admin-in-any-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/free-compagnon-roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-free-spins-link-blogspot_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_off00003107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3107 22008 bytes
SHA-256: 2a0f15aaff74f85b9cd01d3baa46b74dc5cd0e3e2c3d8027deb3be1203a7baa4
font_01_sfnt_off000061da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 19532 bytes
SHA-256: 576fb7612fe2f6ba86219298b5b535f68533954cab5ccdfa2870c9297cf92e56

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