Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac82c7c0b477138f…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 08:53:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 963d1d524838590fa45cb0890170c01e SHA-1: 90244c348d054b814036a5d75bf012b13df53628 SHA-256: ac82c7c0b477138f0077291a4495abc3082394931bf20062a4cf34f3b3b27c31
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/406889139/hack-coin-master-no-verification-game-hack PDF link annotation
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-no-survey-ipad_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/pokemon-go-free-evolve-with-trade_GM1094591345.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/hack-to-make-you-move-in-roblox-survivour_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/descargar-hacks-para-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/minecraft-free-download-android-apk_GM479516143.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
stream_002_off000031ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31EE 23048 bytes
SHA-256: 65815eb55ee2c2d051b59bd19bc312fc5926cfdc6f0abc761e0b25bb81bd3ca7
font_01_sfnt_off0000659a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 18140 bytes
SHA-256: 5b3c035cf64492e5b5586417bea35dada4cf9862e5f7b0f914ffcce4b3dd02fc

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