Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21dd4cbb04bd458…

MALICIOUS

PDF

40.4 KB Created: 2021-05-11 09:21:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f65c793b3ce835f2695770bbce2c12a7 SHA-1: 0c359a98abab77b229224cfc2c91db9996919b0e SHA-256: d21dd4cbb04bd4583d77efdc7f10e40be750714368142f8e486884f1586121f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures related to game hacks and free currency. The primary malicious URL identified is https://netcdn.xyz/app/406889139/united-gaming-net-coin-master-hack-game-hack, which is likely used to distribute further malware or phishing content. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/united-gaming-net-coin-master-hack-game-hack In PDF document text
    • http://beautyforyou.fr/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/robux-today_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-coin-spin-daily-link-coin-master_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004459.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4459 23724 bytes
SHA-256: 9a3e13db89083ffb1adaae883cc7580c28c5ec19c19cc52beb38e668260d2977
font_01_sfnt_off00007a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4C 18624 bytes
SHA-256: cfeb828dedda213aee8682ea59dd941898f0663d73ad806f071fefcb0e9ee11f

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