Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb5881d67c48557…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 10:58:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e0dc5b0d8540e29aa0d543da622e9f08 SHA-1: d82ccad04f3c9b5345d9812290d68c5c1c648d17 SHA-256: 2fb5881d67c4855702a8b6f9db757150492b6c49edad3ccdb71fd138faf93c3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors and sites offering game hacks. The document body and heuristics indicate a lure for "Coin Master" game cheats, directing users to download potentially malicious files or visit scam sites. No scripts were extracted, but the overall pattern suggests a phishing or scam attempt designed to trick users into downloading malware or visiting malicious infrastructure.

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-hack-2021-iphone-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-scam_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/mcpe-client_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robloxfun-com-robux_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_004_off00005255.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5255 25132 bytes
SHA-256: 522e057b8193cbffac388f8d4b105b7d79f7194afb9a9b85445dd6483df7fa5b
font_01_sfnt_off00008b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B75 18460 bytes
SHA-256: 43751d023bce109fa1bfa5d820cc027e3bbd08379b920a29040fad1c48182701

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