Malicious PDF — malware analysis report

Static analysis result for SHA-256 84bf0d06280217bf…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 16:10:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 00dba9f6ad983d2ffcb214ffa1cd926e SHA-1: 7ef0bf979bed82214d3c285d1b1475b83a1cc5a9 SHA-256: 84bf0d06280217bfdf5c426cd07f23226a1d86e7f32271ca046197b4b9420be3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that lead to a malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/free-roblox-minecraft-fort-nitecolor-printables-pdf-game-hack. The document body and heuristic firings indicate a lure for free game items and hacks, which is a common social engineering tactic. No scripts were extracted, but the presence of malicious redirectors and the lure suggest the intent is to lead the user to a malicious site, likely for further exploitation or credential harvesting.

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/free-roblox-minecraft-fort-nitecolor-printables-pdf-game-hack In PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-treelands-free_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-ranks-up-in-a-roblox-group-hack-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/cmo-hackear-el-roblox-para-tener-robux-en-un-mvil_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/synapse-x-for-roblox-scripts-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-tampermonkey-code_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hacked-roblox-jailbeak_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-minecraft-hacked-client-2021_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_off00003272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3272 22092 bytes
SHA-256: 82ee97c4569a57a06ec3635990fe49fe8abb0655954c988517f40253a56aaab1
font_01_sfnt_off00006376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6376 19396 bytes
SHA-256: 9adefb882b58095fe6842c22c5756556a78449df725d71e5c4952b2076eed19b

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