Malicious PDF — malware analysis report

Static analysis result for SHA-256 5faa7513bdbf2fc3…

MALICIOUS

PDF

250.3 KB Created: 2021-07-06 02:43:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a756eef984d2bf0b874424038d8a67ec SHA-1: 941e3c25ceae896915f5a93892cfd36058b039da SHA-256: 5faa7513bdbf2fc3cf0766dfbfac25786989c57d299477735134be5a6a1a0d98
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple high-severity heuristics indicating it's designed to deceive users. It presents a fake CAPTCHA and MFA lure, common in phishing and credential harvesting schemes. The embedded URL points to a site offering game hacks, further supporting a lure-based attack pattern. While no scripts were directly extracted, the PDF structure and heuristics suggest it's intended to exploit vulnerabilities or trick users into downloading further malicious content.

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-or-g-card-game-hack
    • http://perpustakaan.ftk.uinib.ac.id/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-models-hack-your-game-in-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/best-roblox-hacks-gui_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/minecraft-multiplayer-free_GM479516143.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-too-hack-in-superhero-simulator-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id//repository/free-robux-working_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/april-fools-hack-of-2021-roblox-wiki_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id//repository/minecraft-rtx-download-free_GM479516143.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-points_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-jason-mask-free_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-roblox-without-downloading-apps_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/cheat-engine-bypass-roblox-download_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/pokemon-go-free-redeem-codes_GM1094591345.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/cheat-ro-ghoul-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-roblox-clothes-promo-codes_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/alone-roblox-br-hack_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-piano-hack_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-free-yourself-in-notorious-roblox_GM431946152.pdf
    • http://perpustakaan.ftk.uinib.ac.id/repository/get-free-cards-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off00037cd6.bin
f60e9dca1ee9df70638b41d24dfeccfd672c6ed4db292cf10d7a0a166aea5c09		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37CD6 26028 bytes
font_01_sfnt_off0003ba16.bin
2e09cd72471a7ae5f3ea1c5bcbca074eddba0a75a8d83b618c34d35da0a290e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA16 18300 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.