Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29462697004a830…

MALICIOUS

PDF

46.3 KB Created: 2021-05-16 08:37:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 71b7d03196d2626a4165fac8487187f5 SHA-1: 77177d2add0fd1c470af6f7f1f7d08f3507c8f22 SHA-256: d29462697004a830c8943e9ff6d1f46ffb1bc9ec58c47383d2631605a3b3f19c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a generator for free in-game currency. The document body and heuristics indicate a lure for game hacks or cheats, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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.xyz/app/431946152/how-to-get-free-robux-without-verification-2021-game-hack In PDF document text
    • http://www.fabbrotorino.eu/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.fabbrotorino.eu/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4910 26092 bytes
SHA-256: 88a99d8b6c2e34daf7597f34a27cdeee459ee17e1e5aa45c6c71c703d1ff0497
font_01_sfnt_off000084f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F2 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00008ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA9 19528 bytes
SHA-256: 1b346556c7df455cb9a54b8f1a6e3f1a0bfffa2d9228fa0640c35d2bdb9db684

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