Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09d4440ca24bbe6…

MALICIOUS

PDF

43.4 KB Created: 2021-05-10 15:23:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ff6ca330b575aeda5a816cd8878f9f90 SHA-1: 2a31107169c4408cd844f363c1a6d16cc1475c0c SHA-256: d09d4440ca24bbe6ec62508f2089a52fef95c1261923ce78ce6a5463f0e6d233
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'free generator / game hack' lure, directing users to a malicious URL. This tactic is commonly used in phishing campaigns to trick users into visiting potentially harmful websites. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9870

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/tryrbx-site-free-robux-game-hack PDF link annotation
    • http://elsenorcafe.com.co/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003da6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3DA6 25972 bytes
SHA-256: 9b42de64e5f269ffb2c1706e4d0801a27294b8d104be0b11b0412b20fcbe08bf
font_01_sfnt_off00007a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A40 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00008751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8751 18420 bytes
SHA-256: c05555d4ecf6fda64d59e10aa7bbdccb6b0b8342b7e9a04540fdd3a1ca0e8435

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