Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7d2e86097f8ccb…

MALICIOUS

PDF

44.5 KB Created: 2021-05-10 16:04:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 2c08a9e9ac2bbb3aee63ea9a6bc4abf1 SHA-1: 4dcb17e899699dcc1f89b9ec1f15e96e53625209 SHA-256: dd7d2e86097f8ccbb7501f8f2b47f2c77c5b277f8497c87c9627fc18e152fe23
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF contains embedded JavaScript and multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary link directs to a URL associated with Roblox-related scams. The embedded JavaScript likely facilitates the redirection or exploits a vulnerability to execute a payload, contributing to a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 https://netcdn.xyz/app/431946152/roblox-hair-for-free-game-hack In PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/worst-client_GM479516143.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://www.ishvani.com/www/js/ckfinder/userfiles/files/get-free-spins-from-coin-master_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
stream_003_off00004b0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0B 28544 bytes
SHA-256: 1821990a927babf2b2a54fbea884c69a2e81dc42b68d14579c01a0f0fe690a1e
font_01_sfnt_off00008bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD1 18296 bytes
SHA-256: 071abe11bc505b6fd5896db9ed6c4248165c6521bf389675a89e7515009c04ca

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