Malicious PDF — malware analysis report

Static analysis result for SHA-256 027c342539edd354…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 22:26:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f6ead22f74ac210c0c80931511bfe865 SHA-1: 4207825d6e1d1f75529aa04ce29152d092f06009 SHA-256: 027c342539edd354c9a41e0a2dc8bdf7b83d0cba4349f68f737df9cd108dbb5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a prominent link in its body text, all advertising free game hacks and currency generators for popular games like Minecraft, Roblox, and Coin Master. This strongly suggests a social engineering lure designed to trick users into downloading potentially malicious files or visiting compromised sites. The ML classifier also flagged this PDF as malicious with high confidence.

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.tw/app/479516143/how-to-make-a-minecraft-server-for-free-game-hack PDF link annotation
    • https://klp.com.tr/inc/uploads/userfiles/files/roblox-free-robux-download-no-survey_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/speed-hack-roblox-jailbreak-cheat-engine_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/hacks-para-roblox-sin-inyectores_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/get-free-robux-on-roblox-no-human-verification_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/roblox-free-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/free-robux-hack-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/how-to-hack-on-vehile-simualotor-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/top-10-best-free-tshirts-in-roblox_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://klp.com.tr/inc/uploads/userfiles/files/i-need-robux_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_off0000313b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313B 22136 bytes
SHA-256: bf4fb39fd5a63b2095a49ef31eddbfad0ba8ae984cad977b614ff3b4bc5e8a3e
font_01_sfnt_off000061ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 18448 bytes
SHA-256: b3df4715d3d10d222cd03830af22d55d1fd09053c89107a65193d49beb578ea8