Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfc4e2adb0843e8…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 05:50:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 07eed4fbd126f94f74155b2bf3df7d40 SHA-1: 9b542eb07df1d8a72e357f8143fe1f6d15a02528 SHA-256: 3cfc4e2adb0843e8bf63456e0867179e0ba7f338fb81f740580d70df31e52fe4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector URL, which is associated with malicious activity and lures users with promises of free game currency. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely designed to lead users to a malicious website. No scripts were extracted, but the presence of embedded URLs and the nature of the lure indicate a high likelihood of a malicious redirector chain.

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/free-robux-toffu-game-hack In PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/create-a-free-admin-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/infinite-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-hacker-names-list_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-put-hack-scripts-in-roblox-studio_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-meme-gui-free_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/como-hackear-cuentas-de-roblox-sin-necesidad-de-contrasea_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-robux-2021-control-panel_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-apps-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-2021-code_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-hacks-admin-commands_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-free-draw-car-script_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F41 22436 bytes
SHA-256: 68521a83a3037b69c5bea2a9d6157b510fd703640025ebdf2b96e65ff256de0e
font_01_sfnt_off00006183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6183 18716 bytes
SHA-256: 884342b7efeb61499ac305d9c6c9a4c9f3ec27eb5a9c8303c3912f20677f0bd2

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