Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec30afce3343b771…

MALICIOUS

PDF

36.7 KB Created: 2021-07-03 17:36:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e6c4cfa4625c3162e5cb5c815be0fbb4 SHA-1: 733b78ba37fd803d906f20efe3410e89da077a47 SHA-256: ec30afce3343b771b28f53e70ba07b6642027c1883adbc0565e4e0a43cf4b391
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a known malicious redirector infrastructure, leading to a 'free generator / game hack' lure. The document body text and extracted URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or scam attempt.

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/431946152/free-robux-no-human-verification-or-survey-or-download-2021-game-hack In PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/brand-new-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/roblox-juwelen-hack-mad-paintball-2_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/descargar-programa-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengindonesia.com/new/public/ckfinder/userfiles/files/robux-free-c_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_off0000339d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x339D 22540 bytes
SHA-256: 6c62fd4afbe04013d63a163b1afe8fec6b1d7ab6e05ce3196e75e7e00b7b2e38
font_01_sfnt_off000065e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E8 20608 bytes
SHA-256: 84e083980845d6db402b7178d67bc98d29f4cdbc71d93f4e93f474fc98f39a9a

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