Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa0f1472018681b2…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 16:22:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f3382586d01b5915b9b0528bd506cec6 SHA-1: 06cd46225ef3168102b0bc8b1a5995207d91541d SHA-256: fa0f1472018681b2ddfdbba2cf9007e9a7836a2106430f568f2d96f294610c2c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and game-related lures, indicating a phishing or scam attempt. The primary redirector URL is http://netcdn.tw/app/406889139/coin-master-fan-club-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

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/coin-master-fan-club-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/tiktok-free-like-generator_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-limiteds-on-roblox-2021_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
stream_002_off0000315d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x315D 22460 bytes
SHA-256: a89a49a4e0520b8716e77dedc65907a46f4bfb255adff708ca354b0c0446ff06
font_01_sfnt_off00006375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6375 18372 bytes
SHA-256: 22074970575eadcad87cb52a622e0a0fed1ce08607426e4f3de5779985964155

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