Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ec123e04e2f4ed…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 01:44:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c5339b753d3b4c6616344f481aab8b6a SHA-1: 3769a0239d2b6a43842e80b1879e5c7bc7f45722 SHA-256: f3ec123e04e2f4ed676bf84e63c42897aff158b14ef1e736f5ca829f3efeeaea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a malicious redirector. The document body and heuristics indicate a lure for 'free game hacks' or accounts, which is a common social engineering tactic. The primary malicious link identified is http://netcdn.tw/app/479516143/free-minecraft-account-and-password-2021-game-hack, which likely leads to a further malicious download or phishing page.

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/479516143/free-minecraft-account-and-password-2021-game-hack In PDF document text
    • http://bw.ac.th/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-youtube-video_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/pokemon-go-free-and-defit_GM1094591345.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/easy-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-to-hack-on-roblox-windows-10-hp-ocober-2021_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/youtube-yammy-xox-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/roblox-com-roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://bw.ac.th/userfiles/files/how-do-you-get-free-robux-without-doing-anything_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_off00003373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3373 21896 bytes
SHA-256: 2082ea3a81d2be522ec6e704b394793335784be4f8f863cb2f00df2c14b1d810
font_01_sfnt_off000063c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 19032 bytes
SHA-256: e582af1d0fbeeea3add9541703c77343f80dc4f3effaa46735f77695541d6c15

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