Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e27b60da37212e…

MALICIOUS

PDF

45.2 KB Created: 2021-06-09 10:09:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 5770462bfe28b3c0552043f3ab1cb504 SHA-1: 2beef79d73b0ce55cdd8e142d8966fe7cea41c3c SHA-256: d0e27b60da37212e2aa5b66b3e5100f413bbbe84780ce5e07f5d5d3fb1ee2932
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure appears to be related to Roblox and Coin Master, aiming to trick users into visiting potentially harmful sites. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/431946152/hack-forums-for-roblox-game-hack In PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/2021-robux-free-daily_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/real-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/robloxplay-game-free_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-hack-download_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_004_off000051ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51EC 25616 bytes
SHA-256: 73cdcc1bcd9da6f1396633b722c6ba78ff3e13f1d86803cd343b40799c003658
font_01_sfnt_off00008cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCA 18744 bytes
SHA-256: 4b262bf7dc091bf2dcb706ca5f16f8dec0b8fd207d4013ca45d0b45531f79278

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