Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac62e4786d9c9d8e…

MALICIOUS

PDF

35.5 KB Created: 2021-06-24 16:35:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 71fb715ed1ad34c4a8b6d43ba47567e4 SHA-1: 1d5cde2671aaecbf88e817e37819dd57611032bf SHA-256: ac62e4786d9c9d8ea3a17d09a00eaca1fb9295837ca0c3fee57abca47545b1f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this lure, aiming to trick users into downloading potentially malicious content or visiting a phishing site. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/406889139/coin-master-hack-apk-35-33-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-game-called-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-meep-city-money-cheats_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/pointsprizes-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003251.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3251 23456 bytes
SHA-256: 8030b7b25061d627d1b094b8130b8d43c74680ac12e8ee09f30d380a26d10ad3
font_01_sfnt_off0000677d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677D 18488 bytes
SHA-256: b082fb9f4b91cd5801503d5b8dc4153536c68570bccf43a32d31f4ce196b477d

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