Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb513fd8228e64e…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 06:36:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a3fd052ba9f94da83d61938c64330e1d SHA-1: ab290805c974247760fdeec9d1dda263206e6217 SHA-256: 4eb513fd8228e64e1f750e60531d63425546e95ba6392d708195d6faf79e1098
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' or 'game hack' lures for popular games. The document body, though malformed, contains a URL that aligns with the heuristic findings. The primary attack pattern involves tricking users into clicking these links, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/free-account-roblox-with-robux-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/pubg-uc-zip_GM1330123889.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/pubg-uc-earn_GM1330123889.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/como-hackear-coin-master-gratis_GM406889139.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_004_off000050c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C8 24448 bytes
SHA-256: 6cbd379527cc3585802ee0a9e5a404c8e9fed1db3a075a50ca9159a2efc329a3
font_01_sfnt_off000088ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FF 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000092ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92EA 18676 bytes
SHA-256: 668999cf9284642de193c24d0ad86807d097fd3a0f3919542938043f8a05e142

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