Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10e67b424ba02da…

MALICIOUS

PDF

35.6 KB Created: 2021-06-20 06:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 266380b915eee612e705b9b55f9c5ff6 SHA-1: c8161e3bfee5ee671ce5bf0d48931f067befb014 SHA-256: e10e67b424ba02da8946b3f88fe9f891e203ed6d69692524e7b046ae495135c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that point to a known malicious redirector, disguised as a 'free generator / game hack'. The document body and heuristics indicate a lure for free Robux or game hacks, a common social engineering tactic. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via the embedded link.

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-robux-games-obby-game-hack In PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-why-cant-audio-be-free_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-robux-redeem-card-codes_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/el-mejor-video-de-hackear-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/pokemon-go-free-download-for-windows-10_GM1094591345.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/outwit-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/haxteam-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-free-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/https-roblox-hackcom_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
stream_002_off00003230.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3230 23264 bytes
SHA-256: 7677704d8b84b475eae235318aa15001ccb651130f16a4676efcbd9a236210fc
font_01_sfnt_off000065d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D0 19156 bytes
SHA-256: 62f9e7f6aa55f929ccc1e86b500ed6ce81ba879b7abd2b9cc2df4bc1fce90e52

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