Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b02dd210f2e7f61…

MALICIOUS

PDF

37.2 KB Created: 2021-07-01 15:36:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: dbd5b4acbf24059568991d6fc79a4248 SHA-1: ed399661faaf95db9123c027839f72dcc98e1df1 SHA-256: 1b02dd210f2e7f61600f4f2766d65e767d3d7843881df63151a3a6e330b1b55a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, directing users to a known malicious redirector. The embedded links, such as http://netcdn.co/app/431946152/glitches-for-the-hacker-tycoon-in-roblox-game-hack, are designed to lead victims to potentially harmful content. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a malicious redirector pattern, likely intended to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/glitches-for-the-hacker-tycoon-in-roblox-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-find-hacker-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/robux-win_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-money-hack-exe_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/tiktok-free-install_GM835599320.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/ww-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-com-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-how-to-get-clothing-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/i-got-free-robux-from-this_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-apk-link_GM406889139.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_off000039f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39F4 23172 bytes
SHA-256: 3389dafff7c853080ba96d2ac155a288713ea895842767712ee9aeea6f6ca00f
font_01_sfnt_off00006ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCC 19388 bytes
SHA-256: ee97794de64e14df20cb16b43d90ce64bb1790a09931f5abb734e6f831a77f5c

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