Malicious PDF — malware analysis report

Static analysis result for SHA-256 97be659e9405f9de…

MALICIOUS

PDF

36.4 KB Created: 2021-06-20 05:02:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bf0af78de1a1c7c4e667cfd52e6be45c SHA-1: 5a7be8fa3e6da979e56494b2e5b67eb9cef10c67 SHA-256: 97be659e9405f9de2241e6a6ceb924a8b6d9a2755caa3da0e9629f00854fe397
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/hack-block-piece-roblox-autofarm-game-hack In PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-with-no-email-no-hacks-no-buyings_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/official-cheats-and-codes-for-roblox-robot-blocks_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-pokemon-go-accounts-level-30-2021_GM1094591345.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-unban-account-hack_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-do-speed-hack-on-roblox-mad-paintball_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://setda.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-dominus_GM431946152.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_off0000362d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x362D 22580 bytes
SHA-256: dee8ed537767f8de95b79dbbfab84a13d8550ec51dcb0d325f25c1beea603dd0
font_01_sfnt_off00006848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 19432 bytes
SHA-256: 97bded77380a550d3f274b0b18f06f4e1444fa344c7bdcb226157c7f77bbf6c0

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