Malicious PDF — malware analysis report

Static analysis result for SHA-256 c308cd1456ebadd9…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 15:43:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 82895740b917eb3554cf39a05dc6f644 SHA-1: d40121b76d884bc8c1fa2a92e2fd3f0c159b8a15 SHA-256: c308cd1456ebadd9a4e64bf9506a28e7a75ee0e5bbdb57156b7f1d17005efd60
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the embedded link likely leads to a payload download or a phishing page. No scripts were extracted, but the document's structure and embedded links indicate a social engineering attempt.

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-points-for-robux-game-hack PDF link annotation
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/cluster-sphere-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-with-developer-tools-on-chrome_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-hack-anyones-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-raf-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-use-chatbot-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/rbxdemon_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-god-hack-with-lua_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-form_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-get-roblox-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3460 22080 bytes
SHA-256: f38a1839d68e37e7995ed57347f80ef25c0edac9de254fb6ff4b2da663e39fad
font_01_sfnt_off000064ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 19092 bytes
SHA-256: e3fc0c23d859b6dd70331c9bf0dde038afd6162830101c8e078eb305fce1dc74

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