Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07b355524048ebc…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 16:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 41c33028f1d8b50d4cc881c984af99f7 SHA-1: 81075af40c53ef6a55ca396e08b5d35afbee3199 SHA-256: c07b355524048ebc1b68c9ff97954a067ad3a1b6c1b5d2a740562e832efc0cbb
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a "free game hack" and directs users to a URL that likely hosts a malicious payload. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button lure further support this. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to exploit user interest in free game items to initiate a download or redirect to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-sign-up-free-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-114-4-download_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_003_off000049df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DF 25548 bytes
SHA-256: c7eff721706309b7da5cc23b24c15e63898cac50c225cfce1b59bba787076c4f
font_01_sfnt_off00008415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8415 18220 bytes
SHA-256: 6236314a17f57ecfc4f63da4a6b9cb2d9143cd94f6dcae1b1ce204d4da3deb21

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