Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ce9e5d62d5befd…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 19:11:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3b20d72db9067b50f71fb506e478130b SHA-1: 94cdee8f0405de45e782c6ee21da32ab7a716225 SHA-256: 01ce9e5d62d5befd10a89751c2142af6a8c70409a7b54bef1fd75e299f25321e
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 0.9632

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-only-game-hack PDF link annotation
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coins-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B63 24652 bytes
SHA-256: 21f9d617539dc26b8d489653767d646e67be47997e42ce21cc31250cd6104a78
font_01_sfnt_off00008320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8320 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC2 18140 bytes
SHA-256: e8323280cfa25f0840c1e0ad6f99419943ef2c7379aa1851e8b4a739432d5c3e

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