Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd14857e44711503…

MALICIOUS

PDF

36.2 KB Created: 2021-07-05 10:43:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a05b5498da39c2e44041aa089f9cafde SHA-1: 09b208dff685ad9141d24280c10c5e09d48e86de SHA-256: fd14857e4471150378988ec81f3da90c211a2e8c3023a2d2e655dc7b67e42c7f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/479516143/how-to-download-minecraft-for-free-on-iphone-game-hack PDF link annotation
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-make-clothes-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/pubg-30-uc-free_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/minecraft-items_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/youtube-free-robux-2021-bluebig_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-roblox-guest_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-hack-september-2021_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_off000037e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37E9 22236 bytes
SHA-256: 33a9520097ff499a735cde981e4e21ffbc227b263400bf068f8ec335911b4db5
font_01_sfnt_off0000690b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690B 18920 bytes
SHA-256: 0804603b1cc23610cdbf59007cb88478a5f96776826fe68fd4f72156fde116ee

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