Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef04ab19459c476…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 11:55:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8c9cb234fbd1c9ed03945cc7fa83bffc SHA-1: 0d904ccf4dd996c9466f7c5e2a912769e68688bd SHA-256: aef04ab19459c4762d7239bb4cfec3168322d54c5aea2ca726aaae095a155b8e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as generators for game hacks and free currency. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. The presence of embedded URLs and the nature of the lures indicate a likely intent to redirect users to potentially malicious websites for further exploitation or credential harvesting.

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/roblox-free-clothes-names-game-hack In PDF document text
    • http://mebliok.com.ua/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/how-to-get-free-coins-on-meep-city-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/make-robux_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/como-conseguir-robux-gratis-100-real-sin-hacks_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://mebliok.com.ua/images/id-that-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://mebliok.com.ua/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://mebliok.com.ua/images/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/cheat-code-sonic-new-map-roblox_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-roblox-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/how-to-get-free-m-robux_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/ear-free-spins-for-coin-master_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_off00002e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E79 22172 bytes
SHA-256: 07fdf27fbffa6a7737a09ab10438f6d0163bc371e194966930526ecdd60bc49f
font_01_sfnt_off00005fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 18996 bytes
SHA-256: fc0efb726f3721064ce50181253392a62c5960cf6fc47f590c627dd35cad961e

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