Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e26cdb80ee3d80…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 13:22:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7ec18a45e3a77425579363631f237563 SHA-1: 6a4ed4209966e90e7f741d512cbf8ed5ca941f62 SHA-256: 97e26cdb80ee3d80b168c154cfffb6c28772432b21702b68077119e35b066d5b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scamming attempt, likely delivered as a spearphishing attachment.

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-downloading-apps-game-hack In PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-proof-2021_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/roblox-police-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/schnellster-roblox-robux-hack-code_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_off00003201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3201 22120 bytes
SHA-256: 17d7dd4130c3a93018e0dfc9aeeeaed9872c16b5d3e874eec1a058a9cb6cf010
font_01_sfnt_off00006315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 19592 bytes
SHA-256: a44ac9db15e9a0f689b658e0517c09d4447592c082fac33f635fa6b58c0bc840