Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ef69ffa254cf29…

MALICIOUS

PDF

34.2 KB Created: 2021-07-02 05:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 881b136f8580bbe6687bfd2972dbd972 SHA-1: f67672ec18af586887345e592972b9251f803e57 SHA-256: d5ef69ffa254cf29c62aba2c05dc4e7d0efbb3afd90a391ec964cacaa87ad8ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary lure URL is http://netcdn.co/app/431946152/roblox-script-hack--game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this theme, suggesting a social engineering tactic to trick users into visiting potentially harmful sites.

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/roblox-script-hack--game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/best-roblox-free-skins_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/no-human-verification-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-robux-genarator-no-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-dragon-ball-z-rage-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hack-roblox-apk-mobil_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/best-free-roblox-skin_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-generator-no-survey-legit_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-game-hack-tool-download_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-color-name-hack-pastebin_GM431946152.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_off00002dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCB 22628 bytes
SHA-256: d48e582ecc5e2f3b4d9e875d8f65a932898afa15d8e8d0090561213a5d9c6ae0
font_01_sfnt_off0000608f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 19056 bytes
SHA-256: bb76e7a39623e8e346641af63eba4df40d7f195b132658733982612819f2f46a

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