Malicious PDF — malware analysis report

Static analysis result for SHA-256 438076aa131956c2…

MALICIOUS

PDF

32.8 KB Created: 2021-06-21 01:41:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0ddbec37f29ba1ee81f44f3922bc2acd SHA-1: 08e1a2b422ecbdaf2442bb5e300c70d510671efa SHA-256: 438076aa131956c2c7ac3d73a9dd6894dec78e762efd1b96192d0397526b4cc6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/ipod-roblox-hack-game-hack PDF link annotation
    • http://arpinoturismo.it/images/free-united-nations-siterobloxcomgames_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/reddit-hack-roblox_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/best-tools-to-hack-roblox-on-android_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://arpinoturismo.it/images/hacking-coolrichytimemax-in-roblox_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/hackaron-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://arpinoturismo.it/images/site-robux-no-hack_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-get-free-hair-extensions-on-roblox_GM431946152.pdfIn PDF document text
    • http://arpinoturismo.it/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://arpinoturismo.it/images/how-to-get-free-cards-in-coin-master_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_off000029e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E7 22284 bytes
SHA-256: cc4f29947007e8d0d55b1b5d13ee632a53b8eb2519fdc7abd2f7dcefec414139
font_01_sfnt_off00005b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B83 19008 bytes
SHA-256: 666d759c90d609ab9a2c007467318c46b986a59ef0094db10b2449cbddcecf14

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