Malicious PDF — malware analysis report

Static analysis result for SHA-256 02064a9a125b3535…

MALICIOUS

PDF

44.0 KB Created: 2021-05-10 17:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 848b178f26b254b9c6fcc4ede0f3f7e7 SHA-1: dffb822edc1b0682f941bad2ba01bcacca469b8f SHA-256: 02064a9a125b35357a0ed412e40fad3d7e1d09735b68df330b3f279a99f71bbd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure the user into clicking on a "free generator / game hack" which redirects to known malicious infrastructure. The document body and embedded links suggest a social engineering pretext related to game cheats and virtual currency. No scripts were extracted, but the presence of multiple malicious redirector links indicates a high likelihood of further malicious activity upon user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/cheats-coin-master-free-game-hack In PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/claim-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/minecraft-112-2-hacked-client_GM479516143.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_003_off00004914.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4914 24332 bytes
SHA-256: 5d3b156382bcb9206ac0e236099f6476437ad43374b729f9d432c756fcf2eaed
font_01_sfnt_off000080a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A2 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8D 17876 bytes
SHA-256: d474ea2552ad4ab61fecc332af7923c97f8bd7d49077a14e922627460bfe2888

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