Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3100ddd3a52ffb…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 22:22:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b4d9e8386ae62331cb22135c768de0e8 SHA-1: 69e14502959facd684ab64bd35087adf4a335bcf SHA-256: 2b3100ddd3a52ffba8112e52d47c4d2865e8caa656eb57b919c0787cf683d30a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically luring users with 'free generator / game hack' content. The document body, though heavily obfuscated, contains a primary URL that aligns with the heuristic findings. No scripts were extracted from this sample, but the presence of malicious links and the lure suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/coin-master-free-spins-link-without-human-verification-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/freerobux-co_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/daily-free-spins-coin-master-2021_GM406889139.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
stream_004_off00005393.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5393 24644 bytes
SHA-256: 2e5c94be4594d5b5ede0f79cc7e60ffffc695144f9e7e166f3f04cfb88e1f253
font_01_sfnt_off00008c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C00 18952 bytes
SHA-256: 5bef7578775e519c2fb45d4e850344bcdd8c4008e312a1e50628f25058b8457a

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