Malicious PDF — malware analysis report

Static analysis result for SHA-256 a81062c6e79a9084…

MALICIOUS

PDF

33.8 KB Created: 2021-06-18 10:04:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1d40e6cf230d156bb2aec45072704129 SHA-1: 9f48f65c69f1670a55f74f63766560ddbfa3c57a SHA-256: a81062c6e79a9084c9d943aa410219def5b3734dd04585749d3ff94681108151
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, designed to lure users with promises of game hacks and free currency. The document body and embedded URLs suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/roblox-free-accessories-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/como-hackear-ordenador-en-roblox-cuentas_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/6x6x6-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-selena-quintanilla_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/pubg-uc-500_GM1330123889.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/guest-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/the-coin-master-hack_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
font_00_sfnt_off00002f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2F 22060 bytes
SHA-256: 14f030dc6deb408eece27e209ed500bb93678ba84a5cc850e59a43e245920022
font_01_sfnt_off00006018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6018 18768 bytes
SHA-256: 43a1c2d0afcd82e775e61e55c2e0c8a016c3844b087109c53c024c689feb06a9

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