Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdc65991e0d6e707…

MALICIOUS

PDF

41.6 KB Created: 2021-05-12 19:15:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7b9c5d1acf5c8e1336a95bb92c888403 SHA-1: 9ae1eae07dc36943631f64f1d40ee41c1866eac3 SHA-256: cdc65991e0d6e707de852379d85ba9bcc4ef028a469320d168d5d5c8bc0c79b4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to 'make-robux-game-hack' which is flagged as a game hack redirector lure. The document body, though heavily obfuscated, contains similar URLs and text related to game hacks. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely to redirect users to a site that downloads malware or performs phishing.

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/make-robux-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-cheats-for-free-spins_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_off0000484c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484C 24124 bytes
SHA-256: 93001b129f3e41681377cba99a6bc889ace9b34671f13dfe0057eda1966a704f
font_01_sfnt_off00007fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC1 18444 bytes
SHA-256: d485cf64ce85db08f49cebe049b1af1977bd392e7b632f71036820545e301f0d

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