Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd51f0c86213d184…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 05:23:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1b56631e75c64f50d43a076a0830dd6d SHA-1: 6d1a883e4ae5d8a3b8298a76d1b14b4651ec3a64 SHA-256: fd51f0c86213d1848a734d0b92e9cb32d8dd7b36d73866b285545dff078e522f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to Roblox game hacks to trick users into clicking a malicious link. The link redirects to infrastructure known for malicious activity, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering attack.

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.tw/app/431946152/roblox-devil-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-hacking-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-site-robloxcom-robus_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/are-you-cheating-on-your-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-script-hack-trading-game-simulator_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hack-game-roblox-apk_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-club-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-cheat-for-two-player-millitary-tycoon_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-lucky-blocks-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-join-anyone-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-bc-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-strategy_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_off00002daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAA 21992 bytes
SHA-256: dc4af4a4ae28892678033db434fe05ea7bbd60caef0453f853bafaf584b1a760
font_01_sfnt_off00005e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4C 18888 bytes
SHA-256: c9a23f96ad5a11c05217e5f84a72f97f49e870611ecad35af0a4eb3fcf559e41

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