Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde7c12140bd502e…

MALICIOUS

PDF

44.9 KB Created: 2021-05-21 05:03:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ba1652b4fca3b22ea227d4b21baf16a4 SHA-1: c4bf2a76e77caf3ff37325379eb3b5af6e58c377 SHA-256: fde7c12140bd502ea7242ab014ff1b6fac76af7eda9a8422ecc892f912e82c2e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a prominent link within the document body that redirects to a 'free Robux generator' lure. This suggests the document's primary purpose is to trick users into visiting a malicious site, likely to download a second-stage payload or engage in further phishing. No scripts were extracted, but the PDF structure and embedded URIs strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7947

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/how-to-get-free-robux-no-verification-game-hack PDF link annotation
    • http://www.sapaengineering.kz/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.micIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000363f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x363F 26056 bytes
SHA-256: e333a042e9900786a182a99a0bfb980ed2d19fa72080c618e2621de063db95e2
font_01_sfnt_off00007343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7343 3964 bytes
SHA-256: f6b9a386ee4e0aff622a98b2230905da71eab0ca98398cb52018fda3528d3e2a
font_02_sfnt_off000080a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 3396 bytes
SHA-256: e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee
font_03_sfnt_off00008c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C92 18764 bytes
SHA-256: a0d8f559ae1a84b7fc559fdee6dca3899797d6ff6e3d64572866459a8961df23

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