Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58df631f6958942…

MALICIOUS

PDF

36.3 KB Created: 2021-07-01 19:33:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 322a698d40f975baefc2b0d989e903be SHA-1: d5d0420e36d82a7e22347e4e6f70ecbb12daa455 SHA-256: f58df631f6958942f653bc41fcc387fd6977c565987945527da6493d3af4314c
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/free-roblox-banned-accounts-game-hack PDF link annotation
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-obc-list_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification-or-survey-or-downloads_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-codes-for-roblox-live-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-hack-meep-city_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-robux-hack-no-survey-or-download-u-said-tags_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/kram-barry-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/como-hackear-una-cuenta-de-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/tiktok-free-likes-trick_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-questions_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-glitch-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_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_off000034d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34D3 23160 bytes
SHA-256: bfe4ebfbfc3738cc0975f5f9108901089241dc837609743aeea3ccf775fcb455
font_01_sfnt_off000068f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F2 19068 bytes
SHA-256: bcaded30c058ca8bba9d31fee33f310a1ad8bc9c7f1047415ac484f071a48aed

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