Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f652a8571f5ed1e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 10:21:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 002017ae0fa65dd3f3726970a77295cc SHA-1: 04a94de36978ffb9bde9931b14f8f8800c00f17b SHA-256: 7f652a8571f5ed1e088938ffa611350a4702d281523d239b7485ce29ed9c51ef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click on these links, likely leading to further malware downloads or phishing attempts.

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/431946152/roblox-hack-ga-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/project-lazarus-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-win-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-fast-and-easy-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/robux-free-c_GM431946152.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/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hacks-for-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/in-which-country-pubg-uc-is-cheapest_GM1330123889.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/robux-for-free-no-robot_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-mad-city-comment-cheat_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A5 22324 bytes
SHA-256: 5738bb885ffdc3d9cb2fb4778a8fe9c571fa429e1019ff09aa4356bd6c530e34
font_01_sfnt_off0000626d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 18656 bytes
SHA-256: 54ca192054bc8c657e8a7f9e976e5c419448410dec473bf437c4f06f1192f6de

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