Malicious PDF — malware analysis report

Static analysis result for SHA-256 53c3477dcd1f5b2b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 11:27:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8d1f518c2b8c91e03e776441fd08f31a SHA-1: 1c3e80747852a906797e58a9a9fba26bb6624ee2 SHA-256: 53c3477dcd1f5b2bceaca60c0c9baf1d1b587b937b3520baa751eb6e38d66901
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, that lure users to a 'free generator / game hack' website. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious links and the ML classifier output strongly indicate a malicious intent.

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.co/app/431946152/best-roblox-free-roam-games-game-hack In PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-roblox-money-com_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-roblox-assassin-on-ipad_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-change-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-royale-high-school-diamond-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-any-roblox-item-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/cheat-roblox-menu_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/real-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-games-in-2021_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_off0000306f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306F 22480 bytes
SHA-256: 41e8a16b5dc40654b0d4a5bf54fa9cb913de7c1694e0eb73d0aec9da061d8468
font_01_sfnt_off00006289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6289 19016 bytes
SHA-256: e886e804dde411d496f9bda9ffada950f0b15ac70770e34f7a365b154a470a91

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