Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92c28d56e6a8d67…

MALICIOUS

PDF

45.9 KB Created: 2021-05-16 14:26:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cfbb2189d5ce2fbcc7d4e14bdc332e1b SHA-1: 2b68adfb5422f6ef3713cdf077fb71ae862b81a9 SHA-256: b92c28d56e6a8d672d00b60a5473494cbb42bffdcb89b091f598e16d6ec94400
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 0.9432

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/406889139/coin-master-free-spins-link-2021-twitter-game-hack PDF link annotation
    • http://www.mostraining.co.za/images/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/apps-for-free-robux_GM431946152.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
stream_003_off00004b0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0A 26028 bytes
SHA-256: 0d52121276d5409e90c97b0a6303e32df7962465a0284ab665e1425e6f50dcc8
font_01_sfnt_off00008628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8628 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDA 18624 bytes
SHA-256: 2a222fa7736cc624854c57ea31ed5889d6e2ab16aa32c0d7c4a050f5b2ef3bb0

Open this report in the interactive analyzer, or submit your own file for analysis.