Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6ec76bd09ab95b…

MALICIOUS

PDF

33.9 KB Created: 2021-06-28 04:19:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6c6be2d0b1bb35f0c50736baed730623 SHA-1: 5ad7a3fbeff885bd0d431f2352b6b3e1c1ab8d66 SHA-256: 9c6ec76bd09ab95be58e60e0d9dc6a273b159bbf6f6ff3428dba730d3ef95485
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and Robux to entice users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/free-robux-ack-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to a malicious site, likely for credential harvesting or further malware 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/free-robux-ack-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/comment-jouer-a-roblox-avec-une-manette-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-gear-cheat_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-acouts-full-with-robucks_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-mad-city-script-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hack-roblox-script-pastebin_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hack-roblox-no-chash_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-funny-hacking_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/best-roblox-hacked-clients-2021-youtube_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-valkyrie-helm-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0B 22428 bytes
SHA-256: bd84f7008b7e098509382efdf6f41f90097ef3526dfb640d405b048af602ca55
font_01_sfnt_off00006018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 18884 bytes
SHA-256: 4cfcbbc8921bfc004e6bac6de33fbeeed43955cdb29ffcd0f5b6efcb20a6b4a6

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