Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0302ac2630aac8…

MALICIOUS

PDF

27.5 KB Created: 2021-06-20 11:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c75912df1339d6e35ad45cdca1a26d54 SHA-1: d993c5486c993fa4978246a72ed87e466a02e1c6 SHA-256: 1a0302ac2630aac8f8f2b5359acd67c2223e127680a9dff37dc3d9e867405d57
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, that promise free game hacks and currency. The document body and extracted URLs suggest a lure for users interested in games like Roblox and Coin Master. The primary malicious link identified is http://netcdn.co/app/431946152/free-robux-codes-game-hack, which is likely used to deliver a second-stage payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 3

  • 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.
  • 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-codes-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/telecharger-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pokemon-go-free-walk-hack_GM1094591345.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-ticket-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-cheat-in-roblox-find-the-doges_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A6 22716 bytes
SHA-256: 88c26afb6d7fd61bc5d617cb5b93336453ac80b08e813b70e1b44d815107b07a

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