Malicious PDF — malware analysis report

Static analysis result for SHA-256 92392e67092584e6…

MALICIOUS

PDF

45.6 KB Created: 2021-05-16 06:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8691df2cd390d82b49db53317c4407fa SHA-1: 0990513334f479dacd07cde4a07613fa1a74fd77 SHA-256: 92392e67092584e60a08ea4b632643d3c311aa395079e729e6756fa6e146bfba
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 0.9507

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/479516143/free-custom-minecraft-skins-game-hack PDF link annotation
    • http://professionalpilottraining.com.au/images/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/fbchampion_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/minecraft-apk-free-download-016-0_GM479516143.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_off00004e7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7C 24296 bytes
SHA-256: 9e9bbfc355085f6fda48006b371f378f41c79ffdb9646c64ebd3209eeb8c0ed2
font_01_sfnt_off000085f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F6 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00009006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9006 18280 bytes
SHA-256: ec10c50983ae4d489d577a547491e9239078f829f0002f8f667bd43cad21040b