Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e155608c4fa8305…

MALICIOUS

PDF

46.3 KB Created: 2021-05-19 05:55:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 27cfad3ccdb5d206a9c455499079c69c SHA-1: 315f3d11f4c8b8df26486780bfb6c888ab6c236b SHA-256: 7e155608c4fa8305ff8d0ad978f26a97551c5fa0a76193d60e4d1724de213bc0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links that are identified as lures for game hacks and generators, such as 'free-roblox-outfits-2021-game-hack'. These links likely lead to malicious websites designed to trick users into downloading further malware or revealing sensitive information. The ML classifier also flagged the PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/free-roblox-outfits-2021-game-hack PDF link annotation
    • https://www.cosmosdawn.net/images/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/is-minecraft-free-on-xbox_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_off00004b7e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7E 25884 bytes
SHA-256: b1b4933ff22dd545b64a05c3b1bff0df16d773a712aaf3fd8ab93fca614cc3a9
font_01_sfnt_off00008734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8734 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00009131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9131 18712 bytes
SHA-256: 08924b32c91b27fd5bb3b33addbb65fc5755536ddb9ff57fccc382b8f67ce437

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