Malicious PDF — malware analysis report

Static analysis result for SHA-256 471ca9f89a63b790…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 19:19:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6038762d06fc2055f47da1d10fab6e4b SHA-1: 6a9155cae20ed7074f23e4dc745d6df674664a7d SHA-256: 471ca9f89a63b790629314ab493dea21f3ba4df925fcc96f17e5a19352f4dcb4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to trick users into visiting the malicious URL. While no scripts were explicitly extracted, the nature of the lure and the malicious redirector indicate a high likelihood of 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/acuont-stealer-hack-roblox-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/html-free-robux-30_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-clothes-with-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacks-para-roblox-android_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-top-model-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/games-that-you-play-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/tiktok-free-update_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-hack-2021-ios_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacker-fly-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheats-for-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pubg-30-uc-free_GM1330123889.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.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_off00002f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2A 22804 bytes
SHA-256: 8697f316d0fb0fce4e9e65cacd73d408a475afefe5c49ac155a4430035f1ddb1
font_01_sfnt_off00006273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6273 18900 bytes
SHA-256: f27d35a0bce0fb63459fea9541430559d644becc880271da4e8fc667ef8932ff

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