Malicious PDF — malware analysis report

Static analysis result for SHA-256 865fbeb5b7b18f2f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 14:48:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d2065732f2d0c450bcb0914d82d2f424 SHA-1: abeac3f6122b23ad7d927e4d3288bc1f94b1c8d4 SHA-256: 865fbeb5b7b18f2f9dc242f55b981040d9199ea2b8dc23d650233cb5dd3179b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a generator or hack for popular games like Roblox. It contains embedded links that redirect to malicious infrastructure, specifically the URL http://netcdn.co/app/431946152/free-robux-chrome-extention-game-hack. The presence of these malicious redirector links and the overall theme strongly suggest a phishing or scam attempt aimed at tricking users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs are sufficient indicators of malicious intent.

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/free-robux-chrome-extention-game-hack In PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-lumber-tycoon-2-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/pubg-365-uc_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/download-hacks-for-roblox-jailbreak-for-pc_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-generator-no-survey-or-downloads_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/robux-hack-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-toolbox-hack-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/how-to-get-free-knives-in-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/hack-meme-roblox_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_off000030c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C2 22908 bytes
SHA-256: ff723e139da8c6425b084bbd71d18383e5b59de2c949a1dd3927c9d728316a82
font_01_sfnt_off000063ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 19368 bytes
SHA-256: b8e759d414750b875442ac11ad16a1147daccbc7d1a90749870e6ace970d8e17

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