Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab1c5ace0b0c0b8…

MALICIOUS

PDF

49.5 KB Created: 2021-06-03 09:08:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e917506c6b19afecc626be23a28facce SHA-1: f66bb37dba53cc265ffb99f82ecf131fbb020709 SHA-256: dab1c5ace0b0c0b8d36a4dfe00e9e2a33dfd7dc427124977486fae086a33373b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on malicious links. The PDF contains multiple URLs pointing to sites offering "hacks" for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the presence of these deceptive links suggests the document is designed to redirect users to potentially harmful content or phishing sites. No scripts were extracted, but the document's structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/how-to-get-free-clothing-on-roblox-game-hack PDF link annotation
    • https://admin.9credit.vn/data/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://admin.9credit.vn/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000056b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56B5 26216 bytes
SHA-256: bab5c2ef13cf0337a9cfd08073df44ba1783b51e759483c2b8577eed25bd3019
font_01_sfnt_off00009393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9393 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D32 18792 bytes
SHA-256: 65f5669a04a72c1b195fea3b0a176d5191122e06515c696834d6c394c35c2e6b

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