Malicious PDF — malware analysis report

Static analysis result for SHA-256 94934b34df36867b…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 20:14:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a9ddd20b129aaadc1693cb2797157512 SHA-1: 33b2d368aa3965721834c0f6eff1f974224dfbb5 SHA-256: 94934b34df36867ba765f31b23abb7c7d612ce769d410b3ea1d77bcb18b35b3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.tw/app/406889139/free-coins-coin-master-game-hack. The document body and extracted URLs suggest a lure for game-related cheats or currency, likely intended to lead users to a phishing or malware download site. No scripts were extracted, but the presence of malicious redirectors and lures indicates a high likelihood of a phishing or credential harvesting 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/406889139/free-coins-coin-master-game-hack In PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/robux-generator-free-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/comment-avoir-un-cheat-sur-roblox-franais-gratuit_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-gamepass-hack-roblox_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-800-robux-codes_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stimaimmi.ac.id/perpustakaan/repository/free-spin-app-coin-master_GM406889139.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_off00003358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3358 23056 bytes
SHA-256: 496495eef1081735693308487acfaa4e2d41e7699d0e634af24313ea9fafbfa6
font_01_sfnt_off0000672e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672E 17996 bytes
SHA-256: db592684bbdaaeb7647633841870edbd5981f70e843d3403859f62ceb8e0c83d

Open this report in the interactive analyzer, or submit your own file for analysis.