Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bcb398c32580cdc…

MALICIOUS

PDF

50.2 KB Created: 2021-05-14 00:48:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d85a0c745699bcc81350b30e785a01a8 SHA-1: 69f20806a657170ed1b35cb0198a510294c0eafc SHA-256: 6bcb398c32580cdcfa4cd2980dfdffa6290458456f03c409f04d7c1282db2b21
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lure users with promises of free game hacks and currency, such as 'roblox-svg-free-game-hack'. The ML classifier also flagged this PDF as malicious. The primary attack vector appears to be social engineering via a malicious document attachment, leading users to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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 https://netcdn.xyz/app/431946152/roblox-svg-free-game-hack PDF link annotation
    • http://www.controverseinterapie.it/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://www.controverseinterapie.it/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B2D 28404 bytes
SHA-256: 8f1097e02a3322a9ae00c1fff59deee769df2fa348b251a857d0effc3bac49f4
font_01_sfnt_off00008ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC5 3656 bytes
SHA-256: 63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20
font_02_sfnt_off00009774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9774 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000a185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA185 18348 bytes
SHA-256: 82620550cff65874d98c2836b8a60b7f72357efbb651992cfb4f65634f65914f

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