Malicious PDF — malware analysis report

Static analysis result for SHA-256 35916e9772cd13a8…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 13:35:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f6ae876974e4110ef90d0773dc2e86fa SHA-1: 6b661da75d4e9d7cb58814b255ac942fabb4e9e0 SHA-256: 35916e9772cd13a8a4b7520a8e82d2cafa7ec6c7701759baaa07d68fd9fba065
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector domains, including one identified as malicious infrastructure. The document body and heuristic firings indicate a lure for 'game hacks' or 'generators', suggesting an attempt to trick users into downloading further malicious content. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/mobihack-net-roblox-hack-game-hack In PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/rbx-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/pubg-uc-kr-version_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/pubg-uc-top-up-center_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/is-minecraft-java-edition-free_GM479516143.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_off000054cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54CC 24852 bytes
SHA-256: c5a3a7ed6c0ce4283d2f784782dc3f8be54ee2d078351af1521ba238a464bd1d
font_01_sfnt_off00008d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8E 18768 bytes
SHA-256: 4038ce5e3e0945c6cd976405ec29b4e5783f739c83bcd68413f286c6b350b233

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