Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b5730163110270…

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 23:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 324494a83c50a3273b6eb2d9462bf95f SHA-1: 6eae79ce3907c3d3b051658afdf95228b56c7203 SHA-256: 79b5730163110270137d772c7f20bc0a453a1385c7a2f50933fba56ba7baa5b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free generators to entice users. It contains multiple embedded URLs that redirect to malicious infrastructure, including other PDFs. The primary malicious URL identified is http://netcdn.tw/app/431946152/hacks-for-roblox-jailbreak-game-hack, which is flagged as a known malicious redirector. The document's structure and embedded links suggest an attempt to deliver further malicious content or lead users to phishing sites.

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/431946152/hacks-for-roblox-jailbreak-game-hack In PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/hack-roblox-account-passwords_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/roblox-create-free-vip-servers-scripting_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/car-crushers-2-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/roblox-denisdaily-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/wurst-115_GM479516143.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/hack-client-roblox-rocitenz-no-virus_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/pastebin-roblox-account-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/free-roblox-andoid-robux-hac_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/roblox-grand-theft-auto-v-cheats_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/free-roblox-hats-surveys_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/no-scam-free-robux_GM431946152.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_off00003534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3534 22372 bytes
SHA-256: 8315f2a36ad795b24bb6bd50933927bbd8ce63c46d42ba1ba2a25dddedc463b3
font_01_sfnt_off00006700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6700 19104 bytes
SHA-256: 2b000729f5fa2c3c368f92ae190fbd8790038beb4804972d8c46b1aa4044e793

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