Malicious PDF — malware analysis report

Static analysis result for SHA-256 5082de5ded41872f…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 08:20:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 55737612ce950c40ec36b5291bbbb2b1 SHA-1: f495079ecfbb1ee46d50cf1487291f382dac9bff SHA-256: 5082de5ded41872f2a734a8091f877c875e252e85815d84061930a13d5237dde
82 Risk Score

Malware Insights

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

The sample is a PDF that displays a fake CAPTCHA lure, a common social engineering tactic to coerce users into interacting with malicious content. It contains an embedded URI pointing to a URL that likely hosts a secondary payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/can-u-actually-hack-roblox-game-hack PDF link annotation
    • https://inspiration-modellbau.de/images/god-mode-dll-hack-roblox_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/gg-robux-genorator-for-free_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-clothing-items-roblox_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-promo-codes-list-roblox_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/robux-hack-generator-secret-roblox-hack-revealed_GM431946152.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://inspiration-modellbau.de/images/coin-master-hack-2021_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000515b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515B 25552 bytes
SHA-256: 9568f091d14a84b8d01c1e59c91ebd0d8bde03dbd9d1ccb284241e2c92f55092
font_01_sfnt_off00008bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBB 18792 bytes
SHA-256: 70840849926d64ed4dc3245465a0594c3164163067f51188ceca2e6926624131

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