Malicious PDF — malware analysis report

Static analysis result for SHA-256 762206c00ffc63e4…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 17:31:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e944de40f6e86f255c4993fe1fc46a4a SHA-1: dcb778493af51c465c651d3907a52b76a5670dac SHA-256: 762206c00ffc63e4e52116a3b4e44bf1f0f9a203dba74527bacabf4778127639
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with 'game hack' and 'free generator' themes. The primary link, http://netcdn.tw/app/431946152/how-to-change-roblox-username-for-free-2021-game-hack, is designed to trick users into downloading a secondary payload. The document body and heuristics strongly indicate a phishing or malware distribution attempt.

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.tw/app/431946152/how-to-change-roblox-username-for-free-2021-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-trolling_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-exploit-lvl-7-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-week-for-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-pets-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-unlimited-robux-generator_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-roblox-accounts-with-console_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-how-to-get-groups-for-free-and-make-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-hack-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-printable-roblox-characters_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-do-you-get-free-robux-on-roblox_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_off00002fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBC 21924 bytes
SHA-256: 2df4ba95466796d0d7355ef83442b0d14b7bcc6b6bd941a435bd7a1129ee1d52
font_01_sfnt_off00006039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6039 19644 bytes
SHA-256: 4b774c189f9136f23661d737726efe76a6ad5d4a04d9a85acf723e4c99e8a07e