Malicious PDF — malware analysis report

Static analysis result for SHA-256 5089619bd9f6d7cf…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 03:55:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 3c94c866cac29c83ce879bb773ad8f5d SHA-1: 6d3a44ea21188c93fb46c6cafa3b2af5ae5945f7 SHA-256: 5089619bd9f6d7cf5fca8994267d09eef4d3bb68ad53791461f03a0fe47286fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' to lure victims. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and heuristic firings strongly indicate a phishing or social engineering attack aimed at redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-anarchy-server-no-hacks-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/pubg-uc-lucky-draw_GM1330123889.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-client-download_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_004_off000054d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54D5 24892 bytes
SHA-256: eb66c4b8dc980fd89e4f670ddb253424fc1cca9b84659680b6281055e29df254
font_01_sfnt_off00008cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEE 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00009695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9695 18340 bytes
SHA-256: 25c1286fde013f5a892faec283bed83878941bbea70c27f39483b80af7cfb438

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