Malicious PDF — malware analysis report

Static analysis result for SHA-256 f055f23961efba74…

MALICIOUS

PDF

35.9 KB Created: 2021-06-19 00:36:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 91f60d509398359ae8954ffcc1515343 SHA-1: 6a1008400facdb778b321c901b8f659f8eeee320 SHA-256: f055f23961efba743bd3968773c9528e8907cf729b169cecdaa6bcdb23613268
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, as indicated by the document body and multiple heuristic firings. It contains embedded links that redirect to malicious infrastructure, specifically http://netcdn.co/app/431946152/roblox-free-admin-tc2-game-hack. The presence of these links and the ML classifier's high confidence score suggest a phishing or redirection attack aimed at users seeking in-game advantages.

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-free-admin-tc2-game-hack In PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-lebansay_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-use-cheat-engine-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-hack-2021_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_off0000327d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327D 23032 bytes
SHA-256: 92ae7130b5404ff4d3ccc2d66114ebad7dc3fe0746773271914b1971a4e2ae55
font_01_sfnt_off00006675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6675 19328 bytes
SHA-256: 85799cf6acd3e08017584fc8c7506c90c1dff6208f1cc12643039c232b30521a

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