Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef0fc33db03990c9…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 21:36:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 00ac6b0bb3f5694c817a61daef72f3cf SHA-1: 22d3d4f1255afa3b151ece4acd3f5515ce2ee086 SHA-256: ef0fc33db03990c95be51caf80c51c9e574aaabcf44d3df08fa32f8fc2f99039
62 Risk Score

Malware Insights

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

The document contains numerous URLs pointing to game hacks and exploits, suggesting a lure for users seeking cheats or unauthorized access. The presence of a visual download button and callback lure heuristics further support a phishing or scamming intent. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious content designed to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/coin-master-free-attack-game-hack
    • https://library.pqm.co.id/repository/minecraft-pe-free-ios_GM479516143.pdf
    • https://library.pqm.co.id/repository/yuno-surveys-for-free-robux_GM431946152.pdf
    • https://library.pqm.co.id/repository/how-to-get-coin-master-card-free_GM406889139.pdf
    • https://library.pqm.co.id/repository/minecraft-java-free-account_GM479516143.pdf
    • https://library.pqm.co.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://library.pqm.co.id/repository/hacks-para-db-rage-roblox_GM431946152.pdf
    • https://library.pqm.co.id/repository/nuevo-hack-de-robux-2021_GM431946152.pdf
    • https://library.pqm.co.id/repository/hack-roblox-robux-2021_GM431946152.pdf
    • https://library.pqm.co.id/repository/robux-hack-free-robux_GM431946152.pdf
    • https://library.pqm.co.id/repository/grand-crossing-roblox-cheats_GM431946152.pdf
    • https://library.pqm.co.id/repository/virgo-hack-roblox_GM431946152.pdf
    • https://library.pqm.co.id/repository/how-to-get-on-a-roblox-game-for-free_GM431946152.pdf
    • https://library.pqm.co.id/repository/roblox-free-printables_GM431946152.pdf
    • https://library.pqm.co.id/repository/free-flow-id-roblox-fortnite_GM431946152.pdf
    • https://library.pqm.co.id/repository/free-fans-on-tiktok_GM835599320.pdf
    • https://library.pqm.co.id/repository/how-to-get-free-roubux-on-roblox_GM431946152.pdf
    • https://library.pqm.co.id/repository/how-to-get-a-dominus-for-free-in-roblox_GM431946152.pdf
    • https://library.pqm.co.id/repository/hack-pc-roblox-jailbreak_GM431946152.pdf
    • https://library.pqm.co.id/repository/roblox-currency-hack_GM431946152.pdf
    • https://library.pqm.co.id/repository/free-robux-generator-no-survey-mac_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fd8.bin
cf24b1c7ced54e72143d897f638a8e9bf70cf9f18d59d0a930583ac7de2ccfa7
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD8 22468 bytes
font_01_sfnt_off000061f8.bin
75c6e626bf291d9515ad923a84f4b1e9b9d7c6cab114e50afbb6b6b9866eb8df
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 18168 bytes