Malicious PDF — malware analysis report

Static analysis result for SHA-256 400bc446af8472d8…

MALICIOUS

PDF

36.5 KB Created: 2021-06-28 22:43:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ea21773b60d85ded432ccb8cd905a9cf SHA-1: 16371953844a6fe2d704ff0b1e46bdc87158cffd SHA-256: 400bc446af8472d89745bafb13a5682d565ac19f0225bc4e2379f075dfb86e03
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically targeting users with lures for free in-game currency like Robux and Coin Master spins. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the target URL. The document body also contains a call-to-action phrase, reinforcing the social engineering aspect of the attack.

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/you-can-export-only-first-20210-rows-available-for-your-subscription.-game-hack In PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-find-hacked-roblox-booga-booga-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/robux-cheat-no-human-verification_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/da-hood-hacks-roblox-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/jailbreak-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/static-moonactive-net-free-spins_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_off0000337e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337E 22572 bytes
SHA-256: 6ac7b300b38f36dfc30a76357b4967cea43cb335d18d5758ccb4c7465bc4622f
font_01_sfnt_off000065ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 20280 bytes
SHA-256: c404cc19951ebcedecdbef665a1e7c832851fb4534b75ae46917aaca88bb1921

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