Malicious PDF — malware analysis report

Static analysis result for SHA-256 e985c2db28118f22…

MALICIOUS

PDF

44.1 KB Created: 2021-06-08 18:38:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8b23a1c01b70f8e340e66c34cb3cc6e3 SHA-1: 70b5331d57d449d4f2add00e3a96d82fd5e4fc95 SHA-256: e985c2db28118f22109820136c8e375116839e9da2fe611903ec5aaf005eeb78
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and links to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that likely hosts further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/hack-de-robux-game-hack PDF link annotation
    • http://elektrofahrspass.de/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/robux-hacks-reddit_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-earn-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/tiktok-unicorn-free-download_GM835599320.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF9 25136 bytes
SHA-256: 14f9add9ba44641ce5a29c08eeb8c510f908890436df8accf2aa98af7c942d87
font_01_sfnt_off00008926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8926 18416 bytes
SHA-256: 8a977e4e927b656278b3a53c6757952924d73642fe9911e0754c8cee8c889c83

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