Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57fd0c25a63d006…

MALICIOUS

PDF

38.1 KB Created: 2021-05-22 19:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7bb7e136c07164955fa2c74cbb291072 SHA-1: b01bcefad93c3e17ed7e1c11754db21340b52f1e SHA-256: e57fd0c25a63d006a3150cd395e74d96b8b434e725b8a91dbf81962b4208b228
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document displays a fake CAPTCHA or human verification prompt to trick the user into clicking a malicious link. This link, such as 'https://netcdn.xyz/app/835599320/how-to-get-followers-on-tiktok-for-free-game-hack', likely leads to a second-stage payload or phishing page. The document body and embedded URLs suggest a lure for free in-game currency or social media engagement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/835599320/how-to-get-followers-on-tiktok-for-free-game-hack PDF link annotation
    • http://elektrofahrspass.de/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-800-robux_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
stream_002_off00003201.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3201 24444 bytes
SHA-256: 39b9cc2016aea80a27146721b2ae32f73cc27c872cf97f44ae16d4929d12ac0e
font_01_sfnt_off00006a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 3040 bytes
SHA-256: c44607e7c9e0a725bb8cb50a3db0bd965f8daaad196d26d09b52fa090863b17a
font_02_sfnt_off000074f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F2 17692 bytes
SHA-256: b635499a4f9fb6d9e8967cb3fdd5afd49967982b90c247824071efdea06cfe8e

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