Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebe330a118fbe13…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 10:37:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b7856780ad36ca3522d5a28817b46319 SHA-1: b9637fe56b9dd54f1a859b0799fac0db53e5d328 SHA-256: 5ebe330a118fbe137375cce365e14d3960631ed4cb1728ad61693704413fe058
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirection workflow, likely intended to lead users to further 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/free-shark-teeth-roblox-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/get-free-robux-no-human-verification-or-download_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/20210-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-back-a-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-roblox-backdoor-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-er_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hack-2021-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-hotel-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-mod-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/eat-shit-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-tiktok-likes-trial_GM835599320.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
font_00_sfnt_off000030e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E7 22892 bytes
SHA-256: b70478c04f7948dd8013583d66de5435611cb1ea6d37e15ec72ef5f48d575a27
font_01_sfnt_off0000645b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645B 19088 bytes
SHA-256: 752a2f39040bf09eae056570430398202d212cbcd4b40b5a91307f63ced24a4b

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