Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1ae6a9c6affb2d…

MALICIOUS

PDF

250.4 KB Created: 2021-07-05 10:10:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 768395fd1d9b0fc2a9f9b4b8fd09153c SHA-1: 1df1d7e7daf4ea862a31b1286a38038c5195f715 SHA-256: 0a1ae6a9c6affb2dc027fba69ae02bc7181b66c2d8c4aee36371cfc796d7134a
140 Risk Score

Malware Insights

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

The PDF document employs multiple lures, including a fake CAPTCHA and an advance-fee scam, to trick the user into interacting with a malicious link. The presence of a fake CAPTCHA and MFA lure suggests an attempt to harvest credentials or session tokens. The document also contains an embedded URI pointing to a suspicious domain, likely serving as a download or redirection point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0115

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/by-pubg-uc-game-hack
    • http://libsmpn1balongpo.sch.id//repository/free-stuff-on-roblox-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/roblox-hack-god-mode-phantom-forces_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/blox-fish-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/roblox-boat-free_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/hack-coin-master-spin-android_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-without-human-verification_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-group_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/free-guest-roblox_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/robux-hacking-code_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-free-gps-hack_GM1094591345.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-coins-and-spins_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/robuxlove-net-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-to-get-any-gear-on-roblox-for-free_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/minecraft-survival-hacks_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-link-app_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id/repository/roblox-admin-hacks-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-links-for-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037cc4.bin
2de0981bbd29fc97f182304a5626ce8597a757c019136f91f1cdf1a96e535eba		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37CC4 26044 bytes
font_01_sfnt_off0003ba3d.bin
7bc64f0baa093f85ae4a86a565b0adc0e25ed84cc4e3e68764040d97c8eb552c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA3D 18308 bytes

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