Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f301d7e248e39d6…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 20:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d37453331b3e3bc704a674d32413e3d5 SHA-1: 506cfe594b451d693e817651e011fb20b1c5e17c SHA-256: 4f301d7e248e39d61d3198c9365b0dbbc201bbd0e7946a865b834c38263015e5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a website promising game hacks, which is a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports this assessment. Although no scripts were extracted, the document's structure and embedded links indicate an attempt to redirect the user to a potentially harmful site.

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.tw/app/406889139/coin-master-free-spins-hack-no-human-verification-game-hack PDF link annotation
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/roblox-free-flying-practice-place_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/roblox-infinity-rpg-hack_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/hacker-told-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/free-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/free-roblox-cads_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/tsarsploit-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/promo-codes-for-free-stuff-roblox_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/stick-master-luke-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/flame-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/roblox-placerebuilder-cheat-engine-ban_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/roblox-scp-site-61-card-hack_GM431946152.pdfIn PDF document text
    • https://elearning1.man1mempawah.sch.id/__statics/gudangsoal/files/coin-master-free_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_off00003206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3206 22800 bytes
SHA-256: cf79afcdee18772b74a8bbc0fcff3ae9588c50a89681265dcdabcb63b5a03035
font_01_sfnt_off0000652d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 18880 bytes
SHA-256: 52bf7e01ff5d6494e622334a26eccef1bcc1b13c70471615843df61ad6900904

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