Malicious PDF — malware analysis report

Static analysis result for SHA-256 616b43af4e82d5b6…

MALICIOUS

PDF

35.6 KB Created: 2021-06-26 08:37:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 795b3ab4136d211da6cf33c4156bb3f7 SHA-1: a19dac1964138b46b51b837d848e7df8f0c20884 SHA-256: 616b43af4e82d5b6fb48beabc5847cbfdcb001db2aad31043dcbe8fd7503d5d3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text referencing 'free game money' and 'hacks' for popular games, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent. While no scripts were explicitly extracted, the document structure and embedded URLs suggest it is designed to redirect users to malicious download sites.

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.co/app/431946152/how-to-get-free-roblox-money-2021-game-hack PDF link annotation
    • http://suaedy-library.net/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/get-free-hats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/pubg-uc-buy-bd_GM1330123889.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/cheat-engine-la-roblox-para-hilesi-nasil-yapilirir_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-hack-into-your-own-roblox-account_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/games-to-play-free-no-membership-on-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-download-free-chrome_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/pokemon-go-free-ditto_GM1094591345.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spin-link-daily_GM406889139.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_off0000322b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322B 22364 bytes
SHA-256: f6f4d5dffa1dd9bcd4dbb4cbff6c9da1450cd572dc29b3c1082d07152208a080
font_01_sfnt_off00006401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6401 19696 bytes
SHA-256: 94d114b58f926c29fe2eff085de39aa70bc52caaf7834179a2bbdb25e1cb21a3

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