Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6a71380573b1d1…

MALICIOUS

PDF

35.1 KB Created: 2021-06-22 00:41:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 04a68e2d64475c5cb5f5a688bc3f43d3 SHA-1: d345ca637a9d4fc1bf48c68d1f7ebdfc1ee26ad4 SHA-256: 9e6a71380573b1d1edbdf19b0220f71f29591d70c84dcfebb02f3056f1b4eb2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks and free currency generators. The ML classifier and specific PDF heuristics strongly indicate malicious intent, likely to lead users to phishing or malware download sites. No scripts were extracted, but the document body and heuristics confirm a lure-based attack pattern.

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.co/app/431946152/how-to-hack-roblox-accounts-2021-android-game-hack In PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/fake-gps-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/pokemon-go-free-and-inter-egg-sting-development_GM1094591345.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/free-robux-2021-code-jamais-utiliser_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/robux-offers_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-link-2021-download_GM406889139.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_off00003259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3259 21684 bytes
SHA-256: f3d14759bed58b8189a50bc0ab6443b16e3274daa59cc6905020028192e6d695
font_01_sfnt_off000061e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E0 19760 bytes
SHA-256: 86d949d103b3ee762eecd5c5bdaa266a341a6f71f54d1aa52836d7a5c979eff6