Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5f250b77040795…

MALICIOUS

PDF

45.5 KB Created: 2021-06-02 21:31:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 23094cc7e1c91c85d1490d75a81fe52e SHA-1: 55b481c279c802c4decdf319b8c79924fdece58a SHA-256: 0c5f250b7704079551e6bb798582c906d3c55bf74dee1000ecc3eb07d0c56cc8
102 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks, specifically directing users to a URL promising 'how to hack accounts on roblox'. This, combined with the ML classifier's high confidence and the presence of numerous embedded URLs pointing to similar game-related cheat sites, indicates a phishing or scam attempt. The document's structure and embedded links suggest it's designed to trick users into visiting potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/how-to-hack-accounts-on-roblox-on-ipad-game-hack PDF link annotation
    • http://iprep-u.com/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://iprep-u.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://iprep-u.com/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/is-minecraft-free-on-nintendo-switch_GM479516143.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_off00005098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5098 25784 bytes
SHA-256: 616dd961e52760df187436b2bc4f1a7fd85b5156d4d8302dbef640d1ec0861a7
font_01_sfnt_off00008d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2A 18940 bytes
SHA-256: 3cb729709dc6851d53ff143cc0e3bae6ad5228af47c64e35e5df53314638e877

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