Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f9791db67c219e…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 09:31:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d2c152220d3b4ff2af47775ad7fad2dc SHA-1: 106a9f0fe419be70bf927925358394534bd3a09f SHA-256: 98f9791db67c219e082e2fa8db737e364d1ea7681f0de05b7ab970b0c07580ac
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded URLs and a heuristic firing for an external URI, all pointing to sites offering game-related hacks or cheats. The document body, though partially corrupted, suggests a lure related to hacking Roblox accounts. This indicates a likely attempt to deliver a malicious payload or phish for credentials under the guise of providing game exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/how-to-hack-roblox-accounts-on-phone-2021-game-hack
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-robux-youtube-denis_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-robux-generator-no-human-verification_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/coin-master-free-spins-apk_GM406889139.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/moon-active_GM406889139.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/minecraft-hacks-list_GM479516143.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/hack-de-free-drive-roblox_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-robux-hack-generator_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/roblox-accounts-for-sale-free_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/minecraft-fly-hack_GM479516143.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/code-free-robux_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-script-executor-roblox_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-robux-hack-uk_GM431946152.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-coin-spin-coin-master_GM406889139.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/minecraft-wurst-hacked-client_GM479516143.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-robux-without-doing-anything_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051ab.bin
0afa61fa93adc9c7533d43095d482642f97b407c1569913bd92eaa654a4f194f
pdf-font-stream PDF embedded font (sfnt) at offset 0x51AB 25552 bytes
font_01_sfnt_off00008c95.bin
ee3ccdf346fecf17211ec9caf874d857695d657b5f92e2b1f0fe00576c016ffb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C95 19312 bytes