Malicious PDF — malware analysis report

Static analysis result for SHA-256 11590ec7b0c04919…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 17:14:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f2e0bcb1fc9da5792c9fd1bc64c07103 SHA-1: 71459b08a7151d62ba0ef51b9f60e2d876c8c42b SHA-256: 11590ec7b0c04919b3d230c96debc6bfc22a2eacd5bb1410a5f5dd10039d19f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/how-to-actually-get-free-robux-game-hack. The document body and heuristics indicate a lure for free game currency or hacks, likely to lead users to a phishing or malware download site. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or credential harvesting attempt.

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/how-to-actually-get-free-robux-game-hack In PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/hacker-clothes-roblox_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-codes-for-roblox-high-school_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/hack-para-tener-robux-infinitos_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/login-robux_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/hacks-para-roblox-sin-ijectores_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/hack-para-tener-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-roblox-codes-that-work_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/jailbreak-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-wall-hacks_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/generator-free-robux_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/wall-hacks-and-aimbot-roblox_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_off0000333a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333A 22164 bytes
SHA-256: a4606d2f6f468ee4a801caaa7d1ea192553f4e3400aa7014f8d818169fa60abe
font_01_sfnt_off0000646b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646B 19240 bytes
SHA-256: caa3459e2df0c933814d087edfbfcbd5173e9d054867d82a012ee6c61ee7aa1c

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