Malicious PDF — malware analysis report

Static analysis result for SHA-256 127a1a0a4abf7c49…

MALICIOUS

PDF

41.5 KB Created: 2021-04-27 15:43:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9ea5eb665e0c714e2c26cd1606aa5224 SHA-1: 21a4de6dfa03c6d634dbcf4552cd2cb42ae0548e SHA-256: 127a1a0a4abf7c490fb90c70b5d75a905517eee52318b626be83ade36251ec58
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 0.9941

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 https://netcdn.xyz/app/431946152/spicy-peanuts-free-robux-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-2021-gamingthix.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/phantom-forces-roblox-cheat-codes.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacking-brothers-roblox-account.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-cheats-for-robux-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/earn-free-robux-legally.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/unpatched-cheat-engine-roblox-pokemon.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-roblox-computer.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-no-downloading-apps.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/working-free-robux-generator.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/top-5-ways-to-get-free-robux-nicsterv.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_003_off000040d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40D6 26368 bytes
SHA-256: 93c928130087d41a4740e93df2316d942aa21c2c15606422d0b7697995166dc2
font_01_sfnt_off00007e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E50 18976 bytes
SHA-256: fd4f9a1c2c45cc233a0a41e73e63e42f7a629ae3be17b552040ed323e860c1c9

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