Malicious PDF — malware analysis report

Static analysis result for SHA-256 9337186fe86ec79d…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 05:09:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 86a2d6e404b3165b2d21ab10b55d3c2e SHA-1: db73c30ccc4e42832a60c336e198027a7fe87ba0 SHA-256: 9337186fe86ec79de19793bf5a46514c1e229ac751f764444b42cbabc8c51403
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are identified as malicious redirectors, specifically promoting game hacks and generators. The document body and embedded URLs suggest a lure to trick users into visiting these sites, which likely serve as a gateway for further malicious activity or malware delivery. No scripts were extracted from this sample, but the presence of malicious links and the lure-based content strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/406889139/coin-master-hack-ios-2021-game-hack In PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/robux-link_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005004.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5004 24836 bytes
SHA-256: eb2c2b90c001b3c9c521264c9c2595931d7fbd1de1e0a4d4108ec3f9b66a3364
font_01_sfnt_off0000890f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890F 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000092c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C2 18116 bytes
SHA-256: 663054a01704a270a88e5c65db4cbe82af3fd3dd58587b1cb05b092ffe619ba9

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