Malicious PDF — malware analysis report

Static analysis result for SHA-256 012cd13a624029d2…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 09:46:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9bc7b2a4dae12f22d99f73bdee8ce6b4 SHA-1: aad47b346873beff76bdb5901969a8ac44f4ba23 SHA-256: 012cd13a624029d2a9b6afef923660021302ee7166a021ca0a9408ce5db4eeeb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and other PDFs, masquerading as generators for in-game currency or hacks. The primary lure is a 'free generator / game hack' promising free spins for Coin Master, which redirects to a malicious URL. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious sites.

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.tw/app/406889139/free-spin-and-win-coin-master-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/pubg-uc-olx_GM1330123889.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-free-epic-face_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/is-tiktok-free-to-install_GM835599320.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-codes-genorateor_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-support_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-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_off00002e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E30 22176 bytes
SHA-256: 2af4b5482dc8a0f816445247f05520c158e80470d60470260e51c6ff3b534450
font_01_sfnt_off00005f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8F 18548 bytes
SHA-256: b9db317eaf3db36a6e52b5dfe98c7fc2c97b5ad438dfc0dcb37cbdfbcff15dbf