Malicious PDF — malware analysis report

Static analysis result for SHA-256 7114598ce6b2f8f0…

MALICIOUS

PDF

50.9 KB Created: 2021-06-03 22:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a630f58706e683202ae4c5ffe36f6663 SHA-1: bcf471628722b43720710b15997dfff296ef772d SHA-256: 7114598ce6b2f8f01bfce721c1dc0abd0f8f93c8163fb8c09d777de8042c99df
82 Risk Score

Malware Insights

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

The PDF document contains a lure for 'Free Robux' and impersonates Facebook, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the embedded URL is associated with a credential phishing attempt. The document's content and the presence of a non-matching domain for the call-to-action link indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/free-robux-apk-game-hack.
  • 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 https://netcdn.online/app/431946152/free-robux-apk-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005273.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5273 25080 bytes
SHA-256: b5ebababd2d0c2122367b936e468827279972d7d5168151f41324c9c162b2029
font_01_sfnt_off00008c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6E 2984 bytes
SHA-256: a48876ea4c8ebf6e5aafed7b7988c43bbdc4f269aae7d16f65c21390373c25ca
font_02_sfnt_off000096b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B7 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C9 18360 bytes
SHA-256: e9359734bc9145e2b26d31ba7f580aebc3bf98c57002eb6e857d81b76a5cddb9

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