Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f117e6848fd09e…

MALICIOUS

PDF

33.7 KB Created: 2021-06-25 06:15:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0c016472879d2e8284a145d4edf4bcda SHA-1: 153c42880d9e1e4341b5d597bdfc3882ff47e34d SHA-256: c6f117e6848fd09e34044dcbb5f90d17fb2dd203e3a9b7a2aec30d3c09dbd20d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing game hacks and free spins, specifically for Coin Master and Roblox. The primary link, http://netcdn.co/app/406889139/coin-master-cheat-to-get-free-spins-game-hack, is flagged as a lure for a game hack redirector. This suggests the document's purpose is to trick users into visiting a malicious site, likely for malware distribution or credential harvesting. No scripts were extracted, but the embedded URLs and the nature of the lures strongly indicate a phishing or malware delivery attempt.

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.co/app/406889139/coin-master-cheat-to-get-free-spins-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/hack-work-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/donttazemebro-roblox-person-hes-a-hacker_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/before-dawn-hack-roblox-pastbin_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/dailyrobux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-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_off00002fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEE 22136 bytes
SHA-256: d9a2762bbdcab969f918913e85e90096a704f2a3cad84605c1b137e63dbc7a3e
font_01_sfnt_off000060f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 18340 bytes
SHA-256: 2b2f286d68f126638810e23e754f1e5bfaa812598f8232f2eb1ff378893a9330

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