Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6a6f838d623e6c…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 09:36:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7ab4f3888851dcb54baf4940aa484b56 SHA-1: c0092669c119e7956f4244d40ab12cbb07706829 SHA-256: 9c6a6f838d623e6cc46672e142e21b2d88b5a5213abc4dff33a89380cab54474
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.co/app/431946152/roblox-free-download-ps-vita-game-hack PDF link annotation
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/cheat-engine-codes-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/how-to-hack-in-roblox-fly-threw-walls_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/robux-generator-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1batam.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes-wikia_GM431946152.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_off00003054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3054 22456 bytes
SHA-256: b3ab5eb0714ca3f9f667e8614aeea5734776a8e151865ca0082d8f8f52a96c96
font_01_sfnt_off00006283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6283 19668 bytes
SHA-256: 01b94cf462220d0b8966488b2ebb6e86db834fdc230ee3e7f69231b33f17fdd7

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