Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8fbde3074a644c…

MALICIOUS

PDF

37.0 KB Created: 2021-07-05 11:27:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 932d37826e3d44ca2a505a3159f995c0 SHA-1: 38ae0db374963e7e6e639d4f114697815872ba98 SHA-256: 3c8fbde3074a644c1dd87c556eb5a5b10a22841481f3d607380d129659bc2695
62 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and text that lure users into clicking links for game-related cheats and downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple suspicious URLs indicates an attempt to redirect users to potentially harmful content or phishing sites. The document body, though partially corrupted, suggests a theme of free game items and hacks.

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-spins-daily-link-game-mod-game-hack PDF link annotation
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-noclip-hack-download-ro-boxing_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/expensive-avatar-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-download-roblox-for-android-phone_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/pokemon-go-free-friends_GM1094591345.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/big-head-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-hat-roblox-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-fix-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-codes-for-iphone_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-roblox-sweatshirt_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/el-mejore-hack-de-roblox-marzo_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-adopt-me-free-plush_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
stream_002_off00003531.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3531 24132 bytes
SHA-256: 52ed1f644c6964fc212e622de24133a204b159f54dc2838d9be7ba135a83d69b
font_01_sfnt_off00006b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B40 19200 bytes
SHA-256: 2f464879eb6955dff4d47278acadfcaefae3bc6428bc9cd395c42ebc3720dce8

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