Malicious PDF — malware analysis report

Static analysis result for SHA-256 77a14b6e8f070da1…

MALICIOUS

PDF

32.2 KB Created: 2021-07-20 03:22:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c30cdf9a83dc8b833b6542046986cf33 SHA-1: 65f788cc90d2d8527cce3858464bddbdec335daf SHA-256: 77a14b6e8f070da1f6b66b9a714c0fa8909d11cc876a670601beb529a475f5f6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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 http://netcdn.tw/app/479516143/free-minecraft-servers-to-join-game-hack PDF link annotation
    • https://armatrutz.de/images/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://armatrutz.de/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://armatrutz.de/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://armatrutz.de/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://armatrutz.de/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://armatrutz.de/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://armatrutz.de/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://armatrutz.de/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://armatrutz.de/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://armatrutz.de/images/coin-master-free-spins-and-coins-today-gift-reward_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
font_00_sfnt_off00002e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E04 21556 bytes
SHA-256: 928e6809dde5b4c12e6b1bc7dbdcaf0fef8f8f55842b017576207e0ba75b9e44
font_01_sfnt_off00005ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE1 17992 bytes
SHA-256: f4dddb1eb99788babbc28e2933b16aea696a65c0930c8e69ff3f00d50dcb50ca

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