Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c69b22e89903b23…

MALICIOUS

PDF

45.5 KB Created: 2021-05-17 02:35:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f05f26c5480a75c26274850543ad9ece SHA-1: c95e4c87fd27c476b5ec3a8faf4338811104587f SHA-256: 4c69b22e89903b236c2d60de9e97a479ee4c1b4992a9099822c05a5bc261c220
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator' and 'game hack' lures related to popular games. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/431946152/can-u-get-free-robux-game-hack In PDF document text
    • http://goosesscuba.com/images/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/weird-roblox_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://goosesscuba.com/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/level-coin_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://goosesscuba.com/images/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://goosesscuba.com/images/robux-free-gift-card-org-hack_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C0 27088 bytes
SHA-256: fe38bd9549d500f4cc2f6e7d9c281a0ae6719f8bdfaa05ff4e6a22ae91344eb5
font_01_sfnt_off000084a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A1 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E50 18532 bytes
SHA-256: 35bb0f01f69d1b5e790ed5f4c0eeb98998139975dc1eb58b588dc01b9002bbc1

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