Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6faa7b0f4bd3dd…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 15:27:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 23866ae981ea37a40f1b609a64bbe9b7 SHA-1: 4a9bfcb9941962ad37d88c10cb93a56a4a7c861c SHA-256: af6faa7b0f4bd3dd77fb00bec1ef5c23556cb52cb950a01d0e288b49cd88480d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The heuristic firings indicate that these links are associated with known malicious redirectors and lures for game-related cheats. The document body text and embedded URLs reinforce this lure, aiming to trick users into downloading potentially harmful content.

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/check-cashed-v3-free-download-roblox-game-hack In PDF document text
    • http://www.eaapiaria.es/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/cydia-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/cool-roblox-shirts-free-shipping_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-codes-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/roblox-someone-hacked-my-account_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/all-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-generator-no-human-verification_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
font_00_sfnt_off00002c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C60 22048 bytes
SHA-256: 779051143c3c7c533d72c67ea9dc53676f260fc25ab0227d4782976406f4573d
font_01_sfnt_off00005d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D62 19800 bytes
SHA-256: 21fe6c48b76edeb5c46fcd4bbd132024d8681763e4eeee75872fd7a3e49655e4

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