Malicious PDF — malware analysis report

Static analysis result for SHA-256 66cc4d305fd391df…

MALICIOUS

PDF

35.3 KB Created: 2021-06-25 18:42:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8655dd0e3a58999f4b08f0823c7bdb25 SHA-1: 717490a9f97460cde7209e23fdb3290e95a92048 SHA-256: 66cc4d305fd391df5c9b783322f0efe4f3092b258627385cb9d6a34fd07c3647
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that redirect to a known malicious infrastructure, specifically advertising free game generators and hacks. The document body text and heuristics confirm the lure is related to obtaining free Robux or game cheats. The primary malicious activity observed is the redirection to the malicious URL, likely to host further malicious content or phishing pages.

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-get-free-robux-yahoo-answers-game-hack In PDF document text
    • https://allpromise.com.tw/image/data/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/roblox-jailbreak-free-exploit_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/coins-master_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://allpromise.com.tw/image/data/files/roblox-t-shirt-size-free-shipping_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3238 22468 bytes
SHA-256: 7fe6ec6cff0ba4c3cd259745918bc8fdd1fe6d2d5b3ffa90a700bcc397ccb496
font_01_sfnt_off00006435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6435 19312 bytes
SHA-256: 7462bea5638c9dd8e358098383ceea05e4610b3b8d8b49081575f2c9c35db151

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