Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c0a167621656db…

MALICIOUS

PDF

50.0 KB Created: 2021-06-10 11:28:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6cee9ef54e0626e9cf58a05a6c50c05b SHA-1: 86f8fb3239306a8b4547b631f7dbcf89c9246981 SHA-256: d2c0a167621656db35a8813a8d154a8c57adc8283ebfa0f376580f687264ad02
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs advertising game hacks and free items, strongly suggesting a lure for users to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a download button lure and callback phishing indicators further support a malicious intent, likely to trick users into downloading malware or engaging in further fraudulent activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-flood-escape-2-no-mega-game-hack
    • http://immo360grad.com/images/coin-master-hack-app_GM406889139.pdf
    • http://immo360grad.com/images/coin-master-free-link-blogspot_GM406889139.pdf
    • http://immo360grad.com/images/free-spins-on-coin-master-without-human-verification_GM406889139.pdf
    • http://immo360grad.com/images/roblox-com-free-robux-games_GM431946152.pdf
    • http://immo360grad.com/images/rbx-land-free-robux_GM431946152.pdf
    • http://immo360grad.com/images/how-to-get-free-skins-in-roblox_GM431946152.pdf
    • http://immo360grad.com/images/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdf
    • http://immo360grad.com/images/how-to-get-free-followers-on-tiktok_GM835599320.pdf
    • http://immo360grad.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://immo360grad.com/images/coin-spin-link_GM406889139.pdf
    • http://immo360grad.com/images/how-to-hack-coin-master-with-root_GM406889139.pdf
    • http://immo360grad.com/images/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://immo360grad.com/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • http://immo360grad.com/images/free-robux-today-hack_GM431946152.pdf
    • http://immo360grad.com/images/coin-master-free-spins-haktuts_GM406889139.pdf
    • http://immo360grad.com/images/how-to-get-minecraft-for-free-2021_GM479516143.pdf
    • http://immo360grad.com/images/free-minecraft-maps-pe_GM479516143.pdf
    • http://immo360grad.com/images/www-roblox-free-download_GM431946152.pdf
    • http://immo360grad.com/images/free-pet-treats-coin-master_GM406889139.pdf
    • http://immo360grad.com/images/free-coin-and-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000538b.bin
e7ea391c07094fd6573ccb9519c99f9ec579f7a1bfc0f874097c01171a2f816c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x538B 28108 bytes
font_01_sfnt_off00009346.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x9346 2840 bytes
font_02_sfnt_off00009cf8.bin
173bb548a05ceb25039b55a2f5b1aeaf8abe68a92993374bee8ef9b5fba9b411
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF8 19468 bytes