Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2cc5b93d28c182…

MALICIOUS

PDF

43.9 KB Created: 2021-05-12 00:05:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 601208da8a9d001be3a880596b2aef3b SHA-1: 5a4b83724caf102814a0556159f1e1e0bb097867 SHA-256: cb2cc5b93d28c1829ef4a9b6b36361877fb5d2a2dbd5be4e3f0ab3df81d64654
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body, though partially corrupted, contains references to game hacks and download links, reinforcing the lure. The embedded URLs are likely part of a phishing or scam campaign designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/minecraft-free-download-windows-game-hack In PDF document text
    • http://repository.poliven.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-spin-and-trading_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_off00004e89.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E89 25748 bytes
SHA-256: 367159a123d73c5b33fd2627934a729228f6a9eced115818ffacbf47fd4920ce
font_01_sfnt_off00008896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8896 18488 bytes
SHA-256: 01dcb0f2ff627f41b1d4924369c472c3c2df1c4c10fc263e12ce9879fd09d82b

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