Malicious PDF — malware analysis report

Static analysis result for SHA-256 5acc08030c6362b8…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 12:23:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 324297d79125d6823fa9f2e2dceb906b SHA-1: 7844fb19145b573dbbc63aa4c2252aedfd6e6a0d SHA-256: 5acc08030c6362b8eff225141df55f9b5113d94e727a50fc2be5db2bc285af31
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 0.9797

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.online/app/406889139/get-free-coins-on-coin-master-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id/repository/tiktok-free-view-500_GM835599320.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/tiktok-free-up-space_GM835599320.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-rape_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-coins-free_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_004_off00004dee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DEE 25352 bytes
SHA-256: 1bd2527d4cad84a445bef0d533aa1d588a8a9ec721f957f5d9a1266d90150edc
font_01_sfnt_off00008727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8727 2880 bytes
SHA-256: aa3d9316068b9037d3bd098234d4f028cff103c619c9dd7dfbf18a3fc4a03b16
font_02_sfnt_off00009113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9113 17712 bytes
SHA-256: 796b70a8db8e23ce278ae6a61b3afa2f3c312ee86460f00d6f7b01e4bcdf4016

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