Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ae1bf4405e37e4…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 12:23:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 23728747368ae0b0fa2a899670fcde10 SHA-1: 2c2ec624cfd69de6851c6689b7ff30aa34529412 SHA-256: f4ae1bf4405e37e4ae5cfb10289de5cf8cfd10688e9e4226da7c9979cf1c3a63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that point to known malicious redirectors, specifically advertising free game currency or hacks. The primary lure appears to be related to 'Coin Master' and 'Roblox' games. The document's structure and embedded links suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

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/406889139/free-coins-coin-master-blog-game-hack In PDF document text
    • http://pianoservice.com.ua/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/spin-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
stream_003_off0000471a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x471A 30688 bytes
SHA-256: 68f087faca1e96cde456f121272ebe9cfd8094ddf8f0d2855ffea51089c04a03
font_01_sfnt_off00008cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAD 18288 bytes
SHA-256: 525699ae71861fffeab431a07c950b4914d38a871fb98becad0e0bea9ac3f1df

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