Malicious PDF — malware analysis report

Static analysis result for SHA-256 5320946a380a415a…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 11:09:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d3f99b11ac78d0705aa75570bb923c8d SHA-1: 10281e45e2e2d93981d9e3f3b90f1caa91d4bac2 SHA-256: 5320946a380a415a7ce289ce542b4da02a5988464119c2657266d2e4435f8789
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for 'free Robux' and game hacks, directing users to the URL http://netcdn.co/app/431946152/free-robux-just-enter-password-game-hack. This URL is highly suspicious and likely leads to a phishing page or a download for malicious software. The presence of multiple related URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-just-enter-password-game-hack PDF link annotation
    • https://ourlady-elearning.com/userfiles/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-roblox-promo-codes-july-2021_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-free-roblox-money-2021_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/xydia-roblox-hack_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/hack-a-game_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://ourlady-elearning.com/userfiles/files/install-free-game-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
font_00_sfnt_off00002d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5D 21876 bytes
SHA-256: 3aae3818108bd19e1b6020917ebed6b21f9b545d372e770ffafde12d6ef5faa4
font_01_sfnt_off00005d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9F 19476 bytes
SHA-256: 2db255672ecf25b5641c24a45c63a696ff3fb8eef47761b1f212751b92e77d14

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