Malicious PDF — malware analysis report

Static analysis result for SHA-256 2761c6c20e596747…

MALICIOUS

PDF

35.5 KB Created: 2021-06-20 03:50:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0ee18512cb07951d4c9630a72b22add6 SHA-1: 8b96420d35a2838cf372b1d6fd81e1f38c8a1471 SHA-256: 2761c6c20e59674740e9b0e154ea4523215da251aaed9614ca14bc72aa6fb402
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/how-to-hack-roblox-phantom-game-hack, are identified as malicious redirectors. The document's structure and content strongly suggest it is part of a phishing or malware distribution campaign, likely initiated via spearphishing attachment.

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/how-to-hack-roblox-phantom-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-2021-easy-method_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/twitter-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-money-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-waiting-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-apk-hack-download_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
font_00_sfnt_off000031e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E5 22672 bytes
SHA-256: 939525a79931cf53a5d45a1347254aedc1967ef3f596747740deb26eb90448e6
font_01_sfnt_off0000646b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646B 19504 bytes
SHA-256: 6cdf8ada6b78346f51ccd295b9853550c50e46bbe6135babd9fdc4d725438f06

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