Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece7475d6d7f6b41…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 03:28:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1b1439d71527bd2377529aff52fcdbe SHA-1: e5c07c64df6e81a549464c5939331ef39f22702e SHA-256: ece7475d6d7f6b41cfc0def830919e8b0494fcc238ce0a703fd83e90585e6ab2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a "free generator / game hack" lure. The document body and numerous extracted URLs reinforce this theme, directing users towards potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive 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.tw/app/406889139/best-free-spins-for-coin-master-game-hack In PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-virtual-item-codes-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/youtube-the-coolunique-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-script-executor-lvl-7-roblox-5-18_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/how-to-speed-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/pokemon-go-free-healing_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/a-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B2 22600 bytes
SHA-256: 9ae30a3af99e2329be16538c2a7332c5755459b8e1325afa176be58441d015f0
font_01_sfnt_off0000660b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660B 18388 bytes
SHA-256: 924d82b7b18e470f0317a48498cf72fd5de55868874b4ed9b89114724747ab16

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