Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca0160deba2a8bc…

MALICIOUS

PDF

251.1 KB Created: 2021-07-05 17:44:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c0c2fd915d231fea2d61a7510b06bfae SHA-1: db2e299c4c6ff1e0f9928305617dc415b7323881 SHA-256: aca0160deba2a8bc40babcca3dccf42f776f96af981a28b078319d28da818431
140 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing or scam lure, employing a fake CAPTCHA and a visual download button to entice user interaction. It also contains urgency language and advance-fee scam lures, suggesting a fraudulent intent. The embedded URL points to a suspicious domain, likely serving as a distribution point for a second-stage payload or a credential harvesting page.

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/pubg-uc-usd-game-hack
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://laboratorium.sman2metro.sch.id//repository/202100-free-spins-coin-master_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id/repository/free-spins-for-coin-master-app_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id/repository/roblox-password-hacker_GM431946152.pdf
    • http://laboratorium.sman2metro.sch.id//repository/hack-the-coin-master_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id//repository/best-minecraft-hacked-client_GM479516143.pdf
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-root-hack_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id/repository/free-minecraft-accounts-reddit_GM479516143.pdf
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-games-download-free_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id//repository/lots-of-robux_GM431946152.pdf
    • http://laboratorium.sman2metro.sch.id/repository/minecraft-112-2-hacked-client_GM479516143.pdf
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdf
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://laboratorium.sman2metro.sch.id//repository/free-coin-master-spin-and-coin-link_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-without-verification_GM406889139.pdf
    • http://laboratorium.sman2metro.sch.id/repository/roblox-how-to-get-free-robux-promo-code-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00038003.bin
5050fc144839d694d4b92f763bdcd0fef85dfb86675245338b4fccd0abf4bab3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x38003 25928 bytes
font_01_sfnt_off0003bd13.bin
6e7f29e0f2f32e84f255d092983e694e04207b6a432527bc7e26bd5a34e9bbaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BD13 18300 bytes

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