Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c35dc2dd1a0cc2f…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 07:50:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c716aa365f6e94546f6c51bff41de60a SHA-1: cca3f2ae2d8f0bfa382bbc18341b85acbdd3de0f SHA-256: 3c35dc2dd1a0cc2f6b8ea8134af905e5467f2d190f6e76d50db684ef7258392c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link that is flagged as a lure for game hacks and free generators, indicating a social engineering tactic. The ML classifier also strongly suggests maliciousness. The document body and embedded URLs point towards a malicious download or phishing attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/479516143/minecraft-windows-10-edition-free-with-java-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/cheat-roblox-client_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-free-clothes-codes_GM431946152.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_004_off00005630.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5630 25840 bytes
SHA-256: fad65ed1ee047434b3d0452eb5b5ef6767836db645d8897e31f59e5ea9a29838
font_01_sfnt_off000090cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CF 18972 bytes
SHA-256: 6c20506a37f57d149a2d60f903306920f0d4438cf2101358cedc4e984bc12f18

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