Malicious PDF — malware analysis report

Static analysis result for SHA-256 909a4d19c2836f0c…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 08:33:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 039fedfca268509e72ed3a5458d62392 SHA-1: 78659bc1f9dd750a027fa4210ab94b3dfe7a0cd1 SHA-256: 909a4d19c2836f0c5b29c24f7e21e54a0ae0e61fd060ff3bf645137d120e66a9
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 document body explicitly mentions 'How To Hack Roblox Accounts' and includes a primary URL that is flagged as malicious. While no scripts were extracted, the presence of malicious links and the lure strongly suggest a phishing or social engineering attack, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-hack-roblox-accounts-youtube-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-tener-robux-gratis-hacks-2021-mayo_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-daily-spins_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
font_00_sfnt_off00002f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F93 21716 bytes
SHA-256: 0e44270f67ef1423257c51b5f730a1a2b55e1c9baadfbf88cf714df8b90dbccf
font_01_sfnt_off00005f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7A 19228 bytes
SHA-256: 7d0a4fc5156dcf12368dd0123dbe4932db066b88c26d77cdab4b3442b7549017

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