Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a260b5519977f33…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 05:10:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d34f6fc0042e0e3ffed08f8197b5fda3 SHA-1: ab535b135f70e396fede78ed141903325204e832 SHA-256: 9a260b5519977f333874fcd11f072c8045af33e128684291f0021a8168b3234f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a social engineering tactic to trick users into visiting a potentially harmful site. While no scripts were directly extracted, the nature of the PDF and its embedded links suggest it's designed to exploit user interest in game-related cheats to lead them to malicious content.

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/roblox-nopede-egine-hacks-game-hack In PDF document text
    • https://opac.itp.ac.id/repository/2021-robux-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-change-the-skybox-in-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-draw-roblox-2_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-rewards_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-simon-says-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-hack-site-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-robloxbloob_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-event-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-accounts-for-work-scam-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hackaron-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-para-roblox-red-boy_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_off00002e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E84 22516 bytes
SHA-256: d05c600b604dc77a8ebf390a860d89f28f66c48cdc9540148ec72a5aa79e8d17
font_01_sfnt_off000060ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BA 19124 bytes
SHA-256: da2623ccd7330ae0aa5c086c7e65437fbaf0db3e7f571c306563081edf88565f

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