Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb44a07913fc563a…

MALICIOUS

PDF

35.4 KB Created: 2021-07-09 09:21:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3f2aa40588e606cbad704a12db68d19d SHA-1: 12b0b9125375440bd28666fa4cd5e7f14947a96e SHA-256: fb44a07913fc563a63547f43532112ec5ca8be25571957856bf427688bd7dba1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and hacks, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a potentially harmful site for further exploitation.

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/431946152/free-promo-codes-for-roblox-2021-game-hack PDF link annotation
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-using-inspect-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/tai-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/free-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-in-app-purchases-jailbreak_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_off00003156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3156 22488 bytes
SHA-256: 974f7612e031c5df773434f2c38b4f8c0ac235500aec67b478bd365fe649ce75
font_01_sfnt_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 19640 bytes
SHA-256: 563683e195a0f9c5774dff93a1ee8ffa5b9fae5e1b7336e1c9c22065f2ab4a19

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