Malicious PDF — malware analysis report

Static analysis result for SHA-256 14696df3f6618f5f…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 15:47:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 06cee16d5a0d25239180ed47a3fdb094 SHA-1: 8f1c48d780635fc365263c24356346559b79b25a SHA-256: 14696df3f6618f5f279b65d7053c6c98090c05931bd688d2854e2a5723438819
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, including one to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks and cheats, likely leading to a phishing site or malware download. The presence of embedded URLs and the malicious redirector strongly suggest an attempt to exploit user interest in free in-game items to compromise their systems.

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/coin-master-hack-unlimited-spins-apk-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/pubg-uc-telegram_GM1330123889.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-xyz_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-just-by-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-make-a-vip-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-roblox-membership-for-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-400-robux-hack_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
stream_002_off00002fdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FDD 22976 bytes
SHA-256: 823beb5bfe4019b1fc8f703f9937b874797167ad84bdda3589d59b82e708d790
font_01_sfnt_off00006370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6370 18876 bytes
SHA-256: 9ae5964c59c7b5357b8ce870d7e4cb44671cda4bfec92866a7ed4d057cfe7744

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