Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa6551dc5acc49c…

MALICIOUS

PDF

36.4 KB Created: 2021-07-05 21:24:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 83e02c12dbf48096a7ba64834816ba40 SHA-1: cfc1bb21efbf14b5478ee2d14bfbda25e1c73578 SHA-256: cfa6551dc5acc49c1884544c71fd02dc6c9020a637d9901d695f4373b50127d4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to a 'coin-master-hack-app-2021-download-game-hack' URL, which is flagged as a lure for game hacks. This suggests a social engineering tactic to trick users into visiting a potentially malicious site. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or malware distribution 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.tw/app/406889139/coin-master-hack-app-2021-download-game-hack PDF link annotation
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-cheat-codes-vehicle-simulator_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-hack-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-free-cool-outfits_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/claim-gg-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/flame-gg-website-hack-not-roblox_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-without-app-download_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/download-roblox-hack-pc_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003464.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3464 23204 bytes
SHA-256: 40d9125c7be93df92bcf0907a14bb1e144af6bb81f1cbd825794bf64a5ddcbe7
font_01_sfnt_off000068ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CE 19160 bytes
SHA-256: 08c3d26020315796c296df9400c9a2a920b0dbbe4ac3986bc7fb3bd2c9b27f96

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