Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f85e22f6e7a46b7…

MALICIOUS

PDF

33.6 KB Created: 2021-07-19 02:20:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5f23565c4ea11440ca976c0cb2825231 SHA-1: 7a6b22f0cde6fc62a790d255070fd13062edbbb5 SHA-256: 1f85e22f6e7a46b7b1dca82fb6dc41c51e30f3a3a34accbdf4c8b4ef30baebb7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for PDF_URI, indicating an attempt to redirect the user to malicious websites. The document body and embedded links suggest a lure for game-related hacks, likely leading to malware or phishing. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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/431946152/how-to-hack-roblox-accounts-on-phone-game-hack PDF link annotation
    • https://itbits.ie/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://itbits.ie/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://itbits.ie/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://itbits.ie/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itbits.ie/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://itbits.ie/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://itbits.ie/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB5 22648 bytes
SHA-256: a3bfeadbc4c758a354278ca5d5b1e61daf43f74dfa263e773710a45aa7ddadd1
font_01_sfnt_off00005eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 19096 bytes
SHA-256: f8e74fa4b968a16dd44a94031ef99ed5be14016bd7b993395bbd98667463fda9

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