Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c4849ab3622bfee…

MALICIOUS

PDF

35.1 KB Created: 2021-06-20 03:42:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 11151118db5275edec56f5ee636e77f4 SHA-1: 7165cdfe905799ed058db1b086b40f792a6d805d SHA-256: 3c4849ab3622bfee6587598eb66459ee484178a753585a64e24af8e43651ef5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as game hacks and free item generators. These links are identified as malicious redirectors, indicating a phishing or malware distribution attempt. The document body and embedded URLs strongly suggest a lure targeting gamers, likely aiming to redirect them to malicious sites for credential theft or further payload delivery.

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/i-think-i-just-got-hacked-on-roblox-game-hack In PDF document text
    • http://cornerwebstudio.com/images/free-models-with-viruses-roblox_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-get-free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/spiderman-stuff-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/roblox-phantom-forcews-hack_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/cheat-engine-roblox-hack-prison-life_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-roblox-hacks-pc_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-cute-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://cornerwebstudio.com/images/rbx-boots-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/how-to-execute-my-hack-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/robux-2021-free_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://cornerwebstudio.com/images/coin-master-hack-tool_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB7 22752 bytes
SHA-256: ccc505bb98d660f005011ddd5edf34e7b0b52440d712ebc0664854178af06b7e
font_01_sfnt_off000062d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D6 19528 bytes
SHA-256: c891f4319e479b14596510624611e705e4ee962fe36d4f1a5bac66c23e661abf

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