Malicious PDF — malware analysis report

Static analysis result for SHA-256 15de41e99499bff7…

MALICIOUS

PDF

35.7 KB Created: 2021-06-28 04:41:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d86fdb8b827333fba681164e37552990 SHA-1: b71b315d95deb83e56ca5d8ea7a7fd807a0940eb SHA-256: 15de41e99499bff794f72b25e5917e6e31b6033b32e6baf2b052447e9ba8a664
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, directing users to malicious redirector infrastructure. The document body contains multiple embedded URLs that are likely part of a phishing or scam campaign. No scripts were extracted, but the presence of malicious links and the lure strongly suggest a phishing or scam attempt.

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/when-does-roblox-librity-county-come-out-free-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-after-the-flash-hack-item-unlocker_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-katana-and-knife-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pokemon-go-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-roblox-using-command-prompt_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-administrator-badge-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-2021-late_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-lua-exploits_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000335b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x335B 22052 bytes
SHA-256: 33a856376980a258c573dd19d1626b29912b132d81e4b2af3ab7904dd2482875
font_01_sfnt_off00006417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6417 19988 bytes
SHA-256: 9bc43867aa1cd38a499430cb326173e15e379b0718df79b84b79b4b6e203e1b7

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