Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d55feb344d37d86…

MALICIOUS

PDF

36.1 KB Created: 2021-07-09 09:05:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 70f3160fd6921d1fd8ee38a965d1830c SHA-1: a2bb0d2fb50dd11e7389565295f4ff417e78bcaf SHA-256: 7d55feb344d37d86cefa6fbfc75f75867cc6875e3f75943978fb4cbab2c88169
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game hacks and spins, directing users to a known malicious redirector infrastructure. The ML classifier strongly indicated maliciousness, and the document body contains multiple embedded URLs that likely serve as part of the redirection chain or payload delivery. No scripts were extracted from this sample, but the presence of malicious links and the lure suggest a phishing or social engineering attack.

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/406889139/how-to-o-get-free-coin-master-spins-game-hack In PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-to-get-hacks-on-roblox-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/71-free-robux_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-vehicul-simulator-hacke_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-counter-blox-hacken-aimbot-wallhack_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-console-free-ronux-hacks_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/blackout-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/hack-cs-go-roblox_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_off00003758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3758 22812 bytes
SHA-256: b81e9275608e9ed4d415850bbd23bd0237d1931ec1134cf13fb4ad0e0a3b1e73
font_01_sfnt_off00006a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8E 18336 bytes
SHA-256: 88fb275224d01e2fb2ba19e8488dcc02f674101147b00fcd4e979f6cbde2f727

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