Malicious PDF — malware analysis report

Static analysis result for SHA-256 33fc09c08b64a707…

MALICIOUS

PDF

33.9 KB Created: 2021-07-07 11:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d62a51de3e7da2ea1fa028922cfcd189 SHA-1: 789e566643d2027dd31fcc35a2ea92cfed7e06f8 SHA-256: 33fc09c08b64a7076c5f5c19fcd9c970104592cd1ab1460e7a36a6094c1903ce
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/free-minecraft-skin-packs-game-hack PDF link annotation
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-download-roblox-player-for-pc_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-girl_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-hack-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/get-any-roblox-gamepass-free_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-hack-for-life-in-paradise_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.man2-cms.sch.id/__statics/gudangsoal/files/free-roblox-gift-card_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_off0000320b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x320B 21944 bytes
SHA-256: e52ba6c2a3dce6e9e3866abe884d423141fdc857dd3394b6e1853917c3c69358
font_01_sfnt_off0000624b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 18180 bytes
SHA-256: af546ec7d16cdc8db8a545ddb361d3216713a52e8bef528030956627ce368622

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