Malicious PDF — malware analysis report

Static analysis result for SHA-256 4be3733200a6bdbf…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 14:14:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b5ca08bb56a1cfdbd91f8aa6c9a18d25 SHA-1: 5dac4536562e073e7f45507dba870ad3c96b79bb SHA-256: 4be3733200a6bdbf45a7e04f84f3eea3f33ceca5d666edbe36c4de34f5546f2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures for popular games like Coin Master and Roblox. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious redirector chain, likely leading to further malware or credential harvesting.

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-free-spins-links-2021-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-promo-card-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robloxs-got-talent-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/pastebin-roblox-free-robux-real_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-obby-june-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-asshurt-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/join-any-roblox-server-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-2021-may_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-speed-hack-on-roblox-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/fun-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/descargar-hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-no-nothing_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
font_00_sfnt_off0000307a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307A 22768 bytes
SHA-256: a30fb9468cd4eeefaa2cdba0113f64d5a6cb3855c019bdd3eb45ad210c6132e2
font_01_sfnt_off00006372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6372 18748 bytes
SHA-256: 785b8830476a1dba2603225cf55ebb3d3433825858fb25e5612ad86a59b30773

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