Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec80ff5c058c4e0…

MALICIOUS

PDF

36.7 KB Created: 2021-07-07 06:13:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 301bc73d190155663e1a0998e772ef1b SHA-1: 01fff5223b43635c464f4c6fe3fb8ca0a3997dd2 SHA-256: 8ec80ff5c058c4e0e79aff295620e8d78c8e8cb51c397c61e864214c68e640f9
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/coin-master-hack-that-actually-works-game-hack PDF link annotation
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-generator-code-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/hack-para-ro-ghoul-roblox-2021-rc_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/raindrop-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/is-roblox-being-hacked-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/roblox-geld-cheaten_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/alone-battle-roytale-roblox-hacks-script-copy_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/free-roblox-shirt-designs_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/pokemon-go-free-leafeon_GM1094591345.pdfIn PDF document text
    • https://elearning.mts-sukaramaiatas.sch.id/__statics/gudangsoal/files/try-minecraft-free_GM479516143.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
stream_002_off0000376a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x376A 23204 bytes
SHA-256: 99389203733f7feab09f4edad631d3a4c33d6ccd2d46987693a37bbaade6fead
font_01_sfnt_off00006bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC1 18764 bytes
SHA-256: 186404235492714141fe178d852b9eea84aa2a2efb3b784b2ce6685dda24414c

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