Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d41b5a205103e73…

MALICIOUS

PDF

36.1 KB Created: 2021-06-25 21:58:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 323df47697c8c1cd296c469fb9b34762 SHA-1: be0f4534e9720393924f6eba4fc3509ea8ed04df SHA-256: 8d41b5a205103e7303b85308f076336c413a7a1af3d2415b3aa5297747c2c5e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that the PDF is designed as a lure, likely to trick users into downloading malware or visiting phishing sites. Although no scripts were explicitly extracted, the nature of the embedded URLs and the 'game hack' lure suggest a malicious intent to exploit user interest in cheating or obtaining in-game currency.

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/why-are-you-cheating-on-your-roblox-girlfriend-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/speed-script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-birth-date_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-tracker_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-safe-way_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cara-cheat-roblox-mining-simulator_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-walk-through-walls-hack-cc_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-codes-for-free-youtube_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-free-roblox-outfits_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_off0000324e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324E 22952 bytes
SHA-256: 7c72b398413106c24715d1129188fbf31320539619a820bb3d6ee65e0e701969
font_01_sfnt_off00006617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 19728 bytes
SHA-256: c6c5c9eaa329ea83a403af5c72bba045134c0c38c3753f9ce5829f03b6b712a7

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