Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8de113330e62360…

MALICIOUS

PDF

45.7 KB Created: 2021-06-02 05:49:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5c30c120e691821d7a4fdfcc1b135af1 SHA-1: 177937062c3ab4a097cc5e56620da6e04050bf62 SHA-256: c8de113330e62360e38e72160105ab98c0c980819966a8658760d6f24b075c55
82 Risk Score

Malware Insights

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

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to exploit users through deceptive links. No scripts were extracted, but the overall pattern points to a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-robux-kid-friendly-no-human-verification-game-hack PDF link annotation
    • http://halitbayramoglu.com.tr/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/master-game_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://halitbayramoglu.com.tr/images/minecraft-hacks-wurst_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
stream_004_off00005196.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5196 26788 bytes
SHA-256: 7dcc7f6f1d5a2acdeaff56d10523b193ffe741be22a3535e16c7a6f250ef43f6
font_01_sfnt_off00008d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D04 19288 bytes
SHA-256: ea469787df873758e357019bb53a1e3c4242eb718badaf8706c42bdc2f61c813

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