Malicious PDF — malware analysis report

Static analysis result for SHA-256 291ed6a6bf52bc61…

MALICIOUS

PDF

251.8 KB Created: 2021-07-05 22:46:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f4c30faae11b1916e914098c3f650281 SHA-1: 6d4842df05fedeaf7d210624deeb33dc1060943d SHA-256: 291ed6a6bf52bc614bfd8ef37d7cd57b7bc3ac455a773eb963ae8d833240c474
140 Risk Score

Malware Insights

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

The document exhibits characteristics of an advance-fee scam, using lures related to prizes and parcel delivery to trick the user. It also presents a fake CAPTCHA and a download button, aiming to coerce the user into clicking a malicious link. The embedded URLs suggest the document is designed to lead users to phishing or scam websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 7

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/1330123889/how-often-pubg-uc-advance-game-hack
    • http://elib.acls-indonesia.com/repository/top-ten-hackers-in-roblox_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/is-minecraft-free-on-switch_GM479516143.pdf
    • http://elib.acls-indonesia.com/repository/how-to-get-free-items-on-roblox-no-inspect-element_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/how-to-hack-roblox-bubble-gum-simulator_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/how-to-hack-roblox-players-accounts_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/master-free-spins-and-coins_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/acually-working-robux-hack_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/free-cheat-codes-for-coin-master_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/will-uk-rc-redwood-county-roblox-be-free_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/hack-para-atravesar-paredes-en-roblox-2021-en-cualquier-juego_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/free-coins-for-coin-master-blogger_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/free-privat-server-roblox_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdf
    • http://elib.acls-indonesia.com/repository/free-really-working-no-password-no-verify-robux-generator_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/how-to-hack-prestonplayz-roblox-account_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/robux-free-eazy_GM431946152.pdf
    • http://elib.acls-indonesia.com/repository/pokemon-go-free-fire_GM1094591345.pdf
    • http://elib.acls-indonesia.com/repository/get-free-spins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off0003812a.bin
afcb5d2a1fc2ecff865da7cbecc862625e5071fe08fc228860547dbed2f63660
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3812A 25928 bytes
font_01_sfnt_off0003be37.bin
466e197b15c9d44b5a6683edb744f52923d6b0269665d2ac3cc2241b030e01d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x3BE37 18824 bytes