Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab1fefdab22c31b…

MALICIOUS

PDF

43.4 KB Created: 2021-05-14 03:19:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b64c5db9b4a74fe1034c5433e2528fbd SHA-1: b4937467a34fdbbba52492a50ebee80dcf09826b SHA-256: 6ab1fefdab22c31b5e208fc92c53403387c9f12219f4909b0df6796961fbb1a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and potentially malicious content, disguised as game hacks and generators. The document body and embedded links suggest a lure to entice users to click through to external sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/479516143/best-minecraft-hacked-client-2021-game-hack In PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/ww-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-hack-roblox-accounts_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_003_off00004d1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1E 25752 bytes
SHA-256: 348b25ef243f2fce773e383fde967782526a71b6099df07cac352f3d0ba7c406
font_01_sfnt_off00008697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8697 18604 bytes
SHA-256: 6a4bfeeb6005d4148602abf6ea83debb02ce542ee7293f3e171eaacbd7f3726b

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