Malicious PDF — malware analysis report

Static analysis result for SHA-256 0492250495494196…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 16:47:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e955dc51d4c4e70f6ca0267b188dbc56 SHA-1: eea876b2d0afd1ee2ae1eb5dd7b4c4c268efc52d SHA-256: 0492250495494196b2284a31da1f8ccc2e42bbb0ff1bcadcc0d5471ff390a399
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the embedded URL is associated with game hack lures. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely intended to lead to a second-stage download or credential harvesting.

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/how-to-get-free-unlimited-robux-game-hack PDF link annotation
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-pocket-edition-mods-for-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_003_off000049b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B9 24240 bytes
SHA-256: c6a09ff93ee0b742fbe90c67392ea4ea0e44c80f169229b5514da4aeb2e9f7a5
font_01_sfnt_off000080f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 19096 bytes
SHA-256: 9b17e9a23becacda63dddbc7f165c1e9b21e0166e4f27ededabbca260bf2e523

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