Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee388d49c6f008d…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 11:46:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 9c16a1a243bddf12bcb487a8641d975e SHA-1: b49593bb7fb9770afca9a4a09b637c59b0969dec SHA-256: cee388d49c6f008d19790acfb16bb5e70dfc2b9d29a07f10f08c51494c8c5bc8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to sites offering game hacks and cheats, such as 'minecraft-112-hacked-client-game-hack'. The primary heuristic firings indicate that the PDF links to known malicious redirector infrastructure and employs a lure for game hacks. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at tricking users into downloading potentially malicious files.

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.tw/app/479516143/minecraft-112-hacked-client-game-hack In PDF document text
    • http://lc.pustaka.unand.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/pubg-uc-vietnam_GM1330123889.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-deep-space-tycoon-hack-script_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/redeem-clde-roblox-free_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/rocitizens-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/bloxburd-free-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/hack-codes-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFD 22064 bytes
SHA-256: bc1164f8a6b86c4ca9295f5166576c068836c2ddd7f954bfd647a49389cf898f
font_01_sfnt_off00005fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBF 18504 bytes
SHA-256: 1c6239c4e7240bb93b61e959f2b21d4e00e02324577494d7f11381c67a244304

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