Malicious PDF — malware analysis report

Static analysis result for SHA-256 0118401c78fa7f8d…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 15:43:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6a4c59d542cd40998f565be084ac026 SHA-1: 2a371b41b6a44e8d3adb2c0686d50001810eb907 SHA-256: 0118401c78fa7f8da8b9b3b97b19447a26af115ec68c6bbf6980aa20d936796d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising game hacks and free currency generators for popular games like Roblox and CS:GO. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a download button lure further support this. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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-cs-go-hack-download-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-times-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-a-free-pet-on-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/greg-hacker-roblox-account_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/money-for-roblox-strucid-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-exploits-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/eran-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-v3rmillion-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hack-free-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/speed-hack-download-roblox-dungeon-quest_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/synapse-roblox-download-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-i-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-grinding-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/rbxoffers-com-free-robux_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_off00003001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3001 22920 bytes
SHA-256: a83778fa29f65f8b62ac6e118fff196d4a17dc8cae6d8c94c7af505632574b1e
font_01_sfnt_off00006399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6399 19160 bytes
SHA-256: c2424002b0158bbfe9ef17432e88aba2751ecf6b624efc85914a08c7bd0d51a3

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