Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd2ee73f4c1d446…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 23:35:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cb0f3f40dacd0b5844f8d68b879f6c82 SHA-1: d94e0faa366a00f29a786b68411182b1c27618f0 SHA-256: acd2ee73f4c1d446b947d188da38e8fe1727e4bf17c124d8ee208b66eb49274c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous related URLs suggests a campaign focused on exploiting user interest in popular games. No scripts were extracted, but the document's structure and embedded links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/how-to-get-free-robux-on-chromebook-game-hack PDF link annotation
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/robux-hack-infinite-robux_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-get-tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-spins-coin-master-links-twitter_GM406889139.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_off00002c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C14 22252 bytes
SHA-256: caa26c60a5065630ac5ddcf0881a09d4eef178e66550a23eeede818d1134c6f1
font_01_sfnt_off00005d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 19580 bytes
SHA-256: 4d24750cd46ba26494693e05732daca39e52767fa8efd004c80234f7c57949b9

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