Malicious PDF — malware analysis report

Static analysis result for SHA-256 c323fe1c6f5b128c…

MALICIOUS

PDF

41.8 KB Created: 2021-05-13 12:32:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0dabe6acfe048e1b9a65441ce76e41b0 SHA-1: b9592433df328e0c09309895783ad300b785365a SHA-256: c323fe1c6f5b128cd77c31a0576001c9482e1175624ea06ab1705d0d0fa8f631
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and lures related to 'free Robux' and game hacks, directing users to external URLs. The primary URL, https://netcdn.xyz/app/431946152/free-robux-roblox-promo-codes-game-hack, is identified as a high-risk lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely intended to lead to a malicious website or download. The ML classifier also strongly flagged this PDF as malicious.

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/free-robux-roblox-promo-codes-game-hack PDF link annotation
    • https://sitam.co.in/images/moon-active-games_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/rbx-robux_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://sitam.co.in/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • https://sitam.co.in/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/spin-coin_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://sitam.co.in/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sitam.co.in/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://sitam.co.in/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://sitam.co.in/images/coin-master-free-spins-cheats_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_off00004645.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4645 26012 bytes
SHA-256: d85a76e49690499dae09e3560ea296f26111c45e97e21ecf9e14bfa87fc36e77
font_01_sfnt_off00007fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCC 18676 bytes
SHA-256: 9297a3cb5fba7ca587652f513aa1222127deb04773b45a9c0f6482a9c793d56f

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