Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5d519022db69e4…

MALICIOUS

PDF

46.9 KB Created: 2021-05-14 10:00:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 863254c01c7c5fd138a139e0cc8d523b SHA-1: 6f351913092669bc33a45107177f86acf6d66d4b SHA-256: 6a5d519022db69e4c50bdd05987d0975e2353003aeaf478032c85f807568728d
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to deceive the user into interacting with a malicious link. This lure is likely intended to trick users into downloading a second-stage payload, as indicated by the embedded URL pointing to a potential exploit or malware distribution site. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/431946152/you-promised-my-son-free-robux-game-hack PDF link annotation
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-monster_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C44 26620 bytes
SHA-256: 6c5bdfc6ebd2604aadca09a80006f79b27818a5bb758e18598f46a19e75abe92
font_01_sfnt_off00008835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8835 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00009232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9232 19260 bytes
SHA-256: 86e86c6d1a3146e1f407edd8c9cf68c56566e4a3a2a05930f639aef478547eb3

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