Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d217a9941349a8…

MALICIOUS

PDF

42.8 KB Created: 2021-05-17 22:57:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1e1a1af657a8886d4d1787df732eb8e4 SHA-1: 09e85fadaa6b16fb552275202e7a246e63b6d17d SHA-256: 41d217a9941349a83e9e04f6ac73fb580a14fb749edc9be2e86b53888a40c4ac
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or redirection attempt, likely to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/get-free-robux-game-hack PDF link annotation
    • http://eliteprofkosmetik.com.ua/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/robux-now_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eliteprofkosmetik.com.ua/images/how-to-get-free-robux-without-email_GM431946152.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
stream_003_off00004a63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A63 25584 bytes
SHA-256: b9d0938ac015489041225415e8f4c80380f60d93c27b6846587d208a1567045f
font_01_sfnt_off00008565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8565 18120 bytes
SHA-256: 79ac164380d838bf2943c127f808202d45f8751c05dbd036140e6fb9b1b49848

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