Malicious PDF — malware analysis report

Static analysis result for SHA-256 866e2ec1fe4ee9d7…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 03:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5d557925014fc477c063a293d5711bf3 SHA-1: fe9421c77a417306200656a5e634f05ab9a32c33 SHA-256: 866e2ec1fe4ee9d7bfec5e6c1a03cf1e2da1c822aecfc63f48b88552893e0cfe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirectors, disguised as generators for free game currency like Robux. The document body and heuristics indicate a lure designed to entice users into clicking these links, which are associated with malicious infrastructure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-verification-2021-game-hack In PDF document text
    • https://www.mb-alati.hr/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/roblox-website-robux_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://mb-alati.hr/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mb-alati.hr/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/get-me-robux_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://mb-alati.hr/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/free-coinmaster-spins_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_off00004909.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4909 25936 bytes
SHA-256: 56356bdcf481a028462a9922c5bbfdfc025d7deff37dff873cd34e30c5c56487
font_01_sfnt_off00008414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8414 19528 bytes
SHA-256: 1b346556c7df455cb9a54b8f1a6e3f1a0bfffa2d9228fa0640c35d2bdb9db684

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