Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79628f8e0bd01de…

MALICIOUS

PDF

34.0 KB Created: 2021-07-07 08:57:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1936abe3df8ac48f476ad668503f56c5 SHA-1: 9bb28c2f251b8cebc92ccbce41d72c182803060c SHA-256: d79628f8e0bd01de71a548484636c4b9490139c71d0cef5cf1c6d8a09981a0f3
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/431946152/how-to-get-free-robux-hack-game-hack PDF link annotation
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/youtuberobux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-op_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-roblox-generator-online_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-website_GM406889139.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/robux-tool-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/nascar-17-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-free-link-spin_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_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 21720 bytes
SHA-256: f14143a79048b12107621fdc6d21b96e2738ea0d47d0305473c63d0bb8d847fc
font_01_sfnt_off00005f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F63 19152 bytes
SHA-256: a9bff55de90b7722e0be476df1c7a65da1171d9638b3b21a902752e59eae7e63

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