Malicious PDF — malware analysis report

Static analysis result for SHA-256 f344a0c32f170781…

MALICIOUS

PDF

44.2 KB Created: 2021-05-19 19:12:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 208dced2b99f73a8f1a5f76787d70348 SHA-1: 7ab59878dbd6496d54a2c4b10ad5c94967d53729 SHA-256: f344a0c32f17078136be3b27f027cf869497ece48890587aeaec05037f01bdc3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free in-game currency, specifically mentioning 'Coin Master' and 'free spins'. It also contains a heuristic firing for a 'Recovery secret / private key request', suggesting a phishing attempt. The embedded URL points to a domain associated with such lures, likely serving as a download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.xyz/app/406889139/hack-to-get-free-spins-on-coin-master-game-hack
    • http://malichy.pl/images/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • http://malichy.pl/images/free-spins-coin-master-march-2021_GM406889139.pdf
    • http://malichy.pl/images/free-private-server-roblox_GM431946152.pdf
    • http://malichy.pl/images/coin-master-hack-pc_GM406889139.pdf
    • http://malichy.pl/images/is-minecraft-free_GM479516143.pdf
    • http://malichy.pl/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
    • http://malichy.pl/images/script-executor-roblox-free_GM431946152.pdf
    • http://malichy.pl/images/claim-free-robux_GM431946152.pdf
    • http://malichy.pl/images/robux-no-human-verification_GM431946152.pdf
    • http://malichy.pl/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdf
    • http://malichy.pl/images/cool-free-roblox-outfits_GM431946152.pdf
    • http://malichy.pl/images/coin-master-free-spins-save_GM406889139.pdf
    • http://malichy.pl/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
    • http://malichy.pl/images/best-free-minecraft-hacked-client_GM479516143.pdf
    • http://malichy.pl/images/coin-master-fan-page-facebook_GM406889139.pdf
    • http://malichy.pl/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
    • http://malichy.pl/images/roblox-exploit-scripts_GM431946152.pdf
    • http://malichy.pl/images/free-pet-food-on-coin-master_GM406889139.pdf
    • http://malichy.pl/images/chisel-and-bits-mod-pe_GM479516143.pdf
    • http://malichy.pl/images/no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004794.bin
733921df8febc61f2f61447c934f073bf3a4102978ebe0c22001426646e787d2
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4794 24808 bytes
font_01_sfnt_off00007f82.bin
a59a6a4ff6337247a190f72fe678d94758a857b837b7557d61257a486c52d280
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F82 3320 bytes
font_02_sfnt_off00008af1.bin
2fbb404e8dbae95b2969f6d33f181e6a84e8673995acec3e52dde22e48280f02
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF1 18056 bytes