Malicious PDF — malware analysis report

Static analysis result for SHA-256 558d555e210d4404…

MALICIOUS

PDF

33.2 KB Created: 2021-07-22 19:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 80356c59ca9ec962e81097b378ea0b96 SHA-1: aaba80f6863a291841ebd9254baace2337d9a636 SHA-256: 558d555e210d4404c91e145e11c89b196a409f5a2d672b08ab6f849d89ae4c55
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 0.9942

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/431946152/free-robux-hack-no-human-verification-game-hack PDF link annotation
    • https://www.anagoria.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.anagoria.com/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.anagoria.com/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.anagoria.com/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/how-to-get-free-tiktok-coins_GM835599320.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_off00002b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B28 22408 bytes
SHA-256: 09784ab56ffa95bc33f64a1d5cf752ed7a9591c9e18a2c9c8d3c347e8445c23b
font_01_sfnt_off00005d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D12 19216 bytes
SHA-256: e0f254d6bdc22578be9872c5e472ec3e587f5271bc56725c7cf8f1860bbc5ee3

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