Malicious PDF — malware analysis report

Static analysis result for SHA-256 3207c69f30d83b5e…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 19:04:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e67ff2f736d48dc7060330539d277c80 SHA-1: e5c2d2a1a778aab46f7bb17223808f108f7e06a0 SHA-256: 3207c69f30d83b5ea1ac802ae940205c5d1c346fd46bffc35e52c9ef2ac1245a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to known malicious redirectors, disguised as "free Robux" or game hacks. The heuristic firings indicate that these links are intended to lure users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/codes-to-get-free-robux-game-hack In PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-spins-coin-master-links-blogspot_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C0 25456 bytes
SHA-256: 618b6d8cfaf11cb02eb8a14487ec514d9ea6f35e4b760a6cf05d356c4644d1fb
font_01_sfnt_off0000851a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851A 18292 bytes
SHA-256: c4e16f213ba515826b0fc8bd2adb9a42249615e2a7fe5232f5ebe2d4ec6172c1

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