Malicious PDF — malware analysis report

Static analysis result for SHA-256 582dca03fccac3af…

MALICIOUS

PDF

50.4 KB Created: 2021-06-11 07:34:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 700bd870f4ad9786b9a8cb238dca4421 SHA-1: ac12d5e7b92e4142ecc5c3a39b844e30e8b3f8cf SHA-256: 582dca03fccac3af07b6b7117912fbb6ddbd7303f0b8ae4c457de358f70e2672
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is https://netcdn.tw/app/431946152/how-to-hack-people-on-roblox-easy-exploit-game-hack, which is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to game hacking, reinforcing the lure. No scripts were extracted, but the embedded links are the primary vector for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/how-to-hack-people-on-roblox-easy-exploit-game-hack In PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-roblox-gift-card-codes-20-dollar_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-crc7-hack-admin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-no-rewards_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/create-obby-free-robux-roblox-studio_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5355 28140 bytes
SHA-256: eed22043e5957f35206ad484ab5d2c25140061328c636d51b5a9de3fd06ec7a8
font_01_sfnt_off00009332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9332 3656 bytes
SHA-256: 63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20
font_02_sfnt_off00009feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEB 19080 bytes
SHA-256: 30c59a66120d23b94050bee1bbaefb0433c265700244f9aab72e18d67d151f16

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