Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a240bdfffe67d52…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 04:42:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a4a17886a74b2a55ec59ed6c50ba382e SHA-1: aa39dd4c910ee4b681e68c9ff45710294d403196 SHA-256: 5a240bdfffe67d523373598d2c690182a16f2f411f2a40c9b9d8e03b16c5b216
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency to trick users into clicking malicious links. The document contains multiple embedded URLs that point to redirectors, including one specifically identified as malicious infrastructure. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-btools-hack-november-2021-game-hack, which likely serves as a gateway to further malicious content or downloads.

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-btools-hack-november-2021-game-hack In PDF document text
    • http://rightlead.com.tw/image/data/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-redeemable-robux-codes_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/download-roblox-windows-10-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-bc-roblox-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/god-mode-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/project-pokemon-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/wurst-115_GM479516143.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/case-clicker-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rightlead.com.tw/image/data/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C3 22044 bytes
SHA-256: 980200dc113923b4e151d227fe4739a74f5d5a5bbf08745ef89d28b1d213def5
font_01_sfnt_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 19536 bytes
SHA-256: 205a495d822819cb8392f4cf927459cb7f1d098b7f01693223b6cadbeb5e84d0

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