Malicious PDF — malware analysis report

Static analysis result for SHA-256 182f4ce186e2ad82…

MALICIOUS

PDF

35.9 KB Created: 2021-06-30 02:49:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fbd3ec70ff2c7fef0be4528d2f5aedd3 SHA-1: 7e9b390e82409657b9b32fb1963020c0ecf0f2cf SHA-256: 182f4ce186e2ad82dd289eea6067c010e512e73eb5396a68bbeab3e8358c5357
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to game hacking and free generators, directing users to a known malicious redirector. The presence of multiple embedded URLs and a critical heuristic firing for malicious redirector links strongly suggests a phishing or malware distribution attempt. Although no scripts were extracted, the document's structure and embedded links are designed to trick users into visiting malicious sites, likely for credential harvesting 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/how-to-hack-roblox-dayz-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/group-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/in-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-everything-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-generator-codeorg-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-do-you-get-free-robux-on-a-phone_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-use-roblox-cheats-on-xbox-one_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-granny-money-cheat_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-free-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hire-a-hacker-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-sword-fighting-tournament-points-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-gift-cards-reddit_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-elemental-battlegrounds-gems-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00003517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3517 22312 bytes
SHA-256: 1ab6f76d293bff005e60cb92f16c9d2be714d92c70392764cb56ff33459933d3
font_01_sfnt_off000066ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AE 19252 bytes
SHA-256: 5c4eb8158d53cbb6b7ebed35d9fbc85c1c9d3028a2eb3d10bf1d607b5de368bb

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