Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87db878f3722e78…

MALICIOUS

PDF

37.1 KB Created: 2021-05-23 20:14:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 652857683594121c141f3c0167fda7a5 SHA-1: 0b14a8a21ae269cdc987509d478f90722f580d3b SHA-256: e87db878f3722e78e7f361a7a47bd281466717e61f555c3c6123d2dd16236c29
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a "CLICK HERE TO ACCESS TIKTOK GENERATOR" call-to-action, strongly suggesting a social engineering lure. It embeds multiple URLs, with the primary one pointing to a "tiktok-likes-for-free-game-hack" resource, indicating a likely attempt to trick users into downloading malware or visiting a phishing site. The ML classifier also flagged this PDF as malicious.

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/tiktok-likes-for-free-game-hack PDF link annotation
    • https://ogm-goettingen.de/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-lawsuit_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_off00003012.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3012 24236 bytes
SHA-256: 612c91f99d0290a2a19a7732bc8d5d449185ec1efdfd34f2547043f505e35014
font_01_sfnt_off00006738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off000071f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F1 17456 bytes
SHA-256: 6bc07a916d4e04dd857b15fc22f6a85a1633f574b63a4730ea8dc15634c660b5

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