Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a4ff3350217aab…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 07:40:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 96fca912059d8b3b2468ced14e832381 SHA-1: e58954e7e8b7fae913d0758a99e5623c29032bb0 SHA-256: 85a4ff3350217aab892fd72d18bfd8b1ee5e280bbc6da2dc04549a858585a126
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary link, http://netcdn.co/app/431946152/e-hack-roblox-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for users to download or access potentially harmful content, likely leading to further malware or scams. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/e-hack-roblox-game-hack In PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/robux-hack-no-games_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/esp-hack-roblox-cbro_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/top-kek-v4-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/infinite-jump-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-long-are-you-banned-from-roblox-if-you-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/slerp-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-codes-giftcards-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/can-a-roblox-exploiter-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master_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_off000031cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CF 22564 bytes
SHA-256: 4b68738d4919a311373625e1c66fb537ea872cf7bf1e70aae33f96f7de25337c
font_01_sfnt_off000063ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EC 18656 bytes
SHA-256: 9a37796cf2d630036fcb43b7fca2a9b93d004611b67af615c7dba945039595b5

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