Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba471fea518868f…

MALICIOUS

PDF

47.3 KB Created: 2021-05-10 15:00:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5182042ecfad8b026d12902ecebcf24c SHA-1: 69cc4278a34c756b4dca5b4e6bc72fccaa0f46c5 SHA-256: fba471fea518868fc7e79f0d1cd539f0a2c4ce07ff70d2363b15a32f6d939694
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free generators" to lure users. The primary malicious URL identified is https://netcdn.xyz/app/431946152/google-how-do-you-get-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attempt, likely intended to deliver a secondary payload or lead to credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/google-how-do-you-get-robux-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-daily-free-spins-blog_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D9A 25376 bytes
SHA-256: dd6ca5d43ec44875eeb2a27091ddec930579b20229749f4d1e2d310d077288cd
font_01_sfnt_off000087a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A5 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off000094cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94CC 18812 bytes
SHA-256: feb1a9118afec68bc04581c8785d3317eaa63f31aad7b08e8712898c0d5a9a77

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