Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b88c6895c42579b…

MALICIOUS

PDF

44.3 KB Created: 2021-05-17 22:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 546a454c36849fbad0c485a888b31bf0 SHA-1: 842e3d7de94fbe396f1771c6d2116f9954d2e3f7 SHA-256: 0b88c6895c42579b6ae09c7f8a7b2217effbcb7d86d7f71d87402d9d8262558b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' or 'game hacks'. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, which is a common tactic for phishing and malware distribution. The presence of multiple redirector links indicates a strong intent to lead the user to a malicious site.

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 https://netcdn.xyz/app/431946152/what-is-exploiting-in-roblox-game-hack In PDF document text
    • http://croatia-flyfishing.com/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/who-to-get-free-robux_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_003_off000049b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B4 27388 bytes
SHA-256: 2ad5fc8494d573bb8620a282b41ac4b38db9547a13d027e067052c99713db6b9
font_01_sfnt_off00008865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8865 19064 bytes
SHA-256: 332feb67be1aecbfc8aa0ddc97fe37fd3c2c9a1323be5d468ed8bc42c0123398

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