Malicious PDF — malware analysis report

Static analysis result for SHA-256 872b6fc4a0ab9613…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 08:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d25a76f05fe945fddfc81e031db1adf5 SHA-1: 6d23be62e5dc845a148f6432c15fd51db345196d SHA-256: 872b6fc4a0ab9613fde0005cdfbb7fecfc25357177b2508a8452936780e2ac76
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and numerous URLs suggest a lure related to game cheats and free in-game currency, a common tactic for phishing or malware distribution. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/cheats-for-the-tales-of-the-range In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-free-robux-mobile-app_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/games-that-really-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-o-use-cheat-engine-in-roblox-tycoon_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/working-robux-hack-windows-10_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/https-blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-get-new-outfit-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/is-there-a-free-way-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-hack-youtube-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-games-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/bloxawards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/bunny-hop-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-promo-coes_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-cards-link-2021-today_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_off0000319f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319F 22688 bytes
SHA-256: 66d1362ac2a0ece037b00460d13c694713baf02cf237e77de109fedeb8c0c4c2
font_01_sfnt_off00006455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 19160 bytes
SHA-256: 4c8272c64749a418cf3494b7e2c667b35b590dea919090a830cb458dd9393ea4

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