Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0fed375bd76d25e…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 01:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 22b57ff109b4035a92c02d794fcd43fc SHA-1: dd6e8ddee46d2650f48c96c017e30483773631f0 SHA-256: d0fed375bd76d25ebe0ef3709f582ff7c21b07d0038f02efc95f6e336a4fb254
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and cheats, directing users to download potentially malicious software. The embedded links, such as http://netcdn.tw/app/479516143/minecraft-wurst-hacked-client-game-hack, are designed to lead users to sites offering these downloads. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to trick users into downloading unwanted files, likely as a form of social engineering.

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.tw/app/479516143/minecraft-wurst-hacked-client-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/como-ser-hacker-en-roblox-sencillamente_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-roblox-on-mac-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-robux-on-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-generator-2021-robux-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-clothes-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/pastebin-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-shirt-codes_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-a-free-dominus-hat-in-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/redeem-roblox-promotions-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-do-u-get-free-robux-2021_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
font_00_sfnt_off0000368b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x368B 22452 bytes
SHA-256: 9452370e7ef04ca12b162b9fb0852afc58a79bb4b62e617fdb6c16de3b3c4c6f
font_01_sfnt_off00006867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6867 18612 bytes
SHA-256: e53125b5c7bb1d2ed45fc012e7c103c06ddfc4678a41cf369a31d21e3b84c15b

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