Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e03c699b6796d65…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 00:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b12caf7dffbad37cc829efcc829fc99c SHA-1: cdce951971be14d2ef6dd54a4dd2c1c787635712 SHA-256: 5e03c699b6796d654ac7ad27bcec191e2ddd5f4e0e86c3d46015891aa9119c5c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game currency or hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/can-i-get-robux-for-free-game-hack PDF link annotation
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-spins-and-coins-on-coin-master_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
stream_003_off00004961.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4961 26096 bytes
SHA-256: 20a226c0046a1a7c449d28b0a7ef9a4ff581ae8012df2aacb60ecb1c803d2ab4
font_01_sfnt_off000085f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F7 18344 bytes
SHA-256: 56a64ad9af2fab004080c55c49ec35472f3c2134e95e40197be892b268dd39d5

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