Malicious PDF — malware analysis report

Static analysis result for SHA-256 3acb181a9a8c55b9…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 18:05:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6697acb6c23ff0540e049a9a2cc0ae3e SHA-1: ca3e048d368444230b24c2fdfad9a226976d3395 SHA-256: 3acb181a9a8c55b94300dadde1463cdd77f5f9358fca518a9a80de2befd406e9
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.co/app/431946152/google-chrome-free-robux-game-hack. The document body and heuristics indicate a lure for game hacks and free currency, a common tactic for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to a malicious site that may host further payloads.

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/google-chrome-free-robux-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-have-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-online-roblox-no-sign-up_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/lumber-tycoon-2-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-change-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/dragon-ball-z-roblox-training-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hacks-fpr-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-fast-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-you-get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/life-hacks-for-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-you-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.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_off00002ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC5 22216 bytes
SHA-256: 7c09ce4491a5529f303949e8d2902addc1aa974b4ea994b0b0c083e8f93642a2
font_01_sfnt_off0000603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 19216 bytes
SHA-256: 3408f9cf44a0341fa639721b3eae0204fd8ef3181b5ca1bd29b282aaff66ce85

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