Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ab8d7e60323c34…

MALICIOUS

PDF

46.6 KB Created: 2021-05-14 03:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8a041276fdc49b56833d86c417144704 SHA-1: f77e508f03e7bb5772f771c0a94b4846cbed75d1 SHA-256: 22ab8d7e60323c341f1a6d1622688acd6c6bc9cc14742486e4464aeb405004a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector at 'https://netcdn.xyz/app/479516143/minecraft-pe-apk-free-download-game-hack'. The document body and embedded URLs suggest a lure for game-related cheats or free items, a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the presence of malicious redirectors and lure content strongly indicates a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/479516143/minecraft-pe-apk-free-download-game-hack In PDF document text
    • http://ambingenieria.com/images/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://ambingenieria.com/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C6 31656 bytes
SHA-256: 464d943b4f52fedc95394b9a9f6efcc3d44e57ef963fa34566c6b2ce9ef78b0f
font_01_sfnt_off0000888d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888D 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off0000922c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x922C 18788 bytes
SHA-256: 56ecf13b7fdae58d5e4afb69efa7bdb7b8d9a7a0932eb3c661bed49813117ab2