Malicious PDF — malware analysis report

Static analysis result for SHA-256 94088d1ea6ff4bd0…

MALICIOUS

PDF

44.7 KB Created: 2021-05-10 22:36:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 73c8ef9e5b9f7790e97abf33ff1547a0 SHA-1: 05f18c411ede5b67a7a46b48bc20afa01e834f61 SHA-256: 94088d1ea6ff4bd0a0a5993fe693dd23b2e0e7fa86f7e2234cfcaf74cfaa9260
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Robux generator' which redirects to a malicious URL. The embedded content and heuristics indicate a phishing attempt designed to trick users into visiting a potentially harmful site. No scripts were extracted, but the PDF structure itself contains malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/free-robux-no-human-verification-generator-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.bandicam.comIn 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_off000045e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45E4 25104 bytes
SHA-256: ccaa327d4d08e4644308f78b08fa8128996e4f151486076c190f69aa36429705
font_01_sfnt_off0000808f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808F 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7A 18860 bytes
SHA-256: d7f1bf4664d5c073c741d68610eb5dcf28a8fd63084b2bf56aee4ef09f8af4a0

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