Malicious PDF — malware analysis report

Static analysis result for SHA-256 0673227939af44ce…

MALICIOUS

PDF

36.1 KB Created: 2021-06-18 23:59:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 722a4a8e051f9d9656be732f444f4787 SHA-1: f7e187788f8f41b7f15b9e45b7692fd729ec12cd SHA-256: 0673227939af44ce45e7df06782ff8f13ab7ddbbdddde6bd147e7867a490face
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that redirect to malicious infrastructure, masquerading as a 'free generator' or 'game hack' for Robux. This lure is designed to trick users into visiting potentially harmful websites. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to lead users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-without-bc-2021-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/lohith-gaming-free-robux-6k_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-private-server_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/www-free-robux-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-pink-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-admin-commands-on-roblox-android_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/games-that-you-can-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-no-survey-generator_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_002_off000032c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C9 22668 bytes
SHA-256: c7d962dea17d73b406c53cf974ab0bc69867812a8235fd4679fe5efb6ab3d813
font_01_sfnt_off000065a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A7 19872 bytes
SHA-256: 2253d078b735986801495b7d6bdab26bdf0c2e452f502c0ed02cd66f4c6d9962

Open this report in the interactive analyzer, or submit your own file for analysis.