Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c976d0f4b63594…

MALICIOUS

PDF

48.7 KB Created: 2021-05-21 21:26:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ce074f415f41f60ba07f4c58240b88c7 SHA-1: 7a08adc37d2e7b7b65a08ec4e3e85ce4a474d494 SHA-256: c1c976d0f4b63594b3a390126b10b2060646ec8b00231177767a70d3a72b7f37
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for linking to a 'free generator / game hack' redirector, specifically pointing to the URL https://netcdn.xyz/app/431946152/give-me-free-robux-game-hack. This lure is designed to trick users into clicking the link, likely leading to a phishing site or malware download. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit user interest in game-related cheats to compromise them.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8454

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/give-me-free-robux-game-hack PDF link annotation
    • https://www.mb-alati.hr/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://mb-alati.hr/files/coin-master-hack-apk-app_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000036b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36B9 27936 bytes
SHA-256: 842398da4da4fdd804481e82ef707b37b2145f8ab08fa2407839ff09d8982107
font_01_sfnt_off00007761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7761 7420 bytes
SHA-256: 0b188308ab0e7ffce9913d63d697a586f2937cafc51a771db38e3a566cd37e24
font_02_sfnt_off00008fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCC 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00009cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CDD 18444 bytes
SHA-256: 68319dbf483afe81c5a4de3b3f5290fc223d358c0f75f000dd988daf46eb7eae

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