Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f6fa1b9ed0a265…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 17:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: e147e52af0384736fb8a408fe46c1749 SHA-1: 340dcabd57d3315b8025dc984c3d34baaae0e9cb SHA-256: d5f6fa1b9ed0a265458dc2dd6ec7af0e8a72e3d07b040900c9cd51696ffc6b66
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. It contains numerous links to redirectors and a link farm, indicating a phishing or scamming attempt. The document's structure and embedded URLs suggest it is designed to lead users to potentially harmful websites.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-on-roblox-new-football-legends-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-one-punch-man-unleashed-hack_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-hack-any-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-dll-hacks_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-hack-without-human-verification_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_off000034e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E5 22556 bytes
SHA-256: 51f4526bc26cde70da7f410c9c70e8c1eb23ac444ce1ff75f145134891d55546
font_01_sfnt_off00006725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6725 19264 bytes
SHA-256: 3c91dd5438d3dd16c36dd7d2233533479e6ba871bb8cc55b762b06e82d6a467b

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