Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d3202272a2d1c2…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 06:46:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 68e273a398d5e47d3be19babf88a63f0 SHA-1: 09d2f9159394788d0a1d0ce6d085cb673c98f629 SHA-256: 89d3202272a2d1c24a2aac538fec28ad67350d1017a8b055513a2a755e30c9ba
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that promote free in-game currency (Robux, Coin Master) and exploits, directly linking to a known malicious redirector. The ML classifier also flagged this PDF as malicious. The primary lure appears to be a fake offer for free in-game currency, leading to the malicious URL.

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/431946152/10.000-robux-free-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-clothes-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hexus-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cheat-buddy-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cr7-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-bubble-gum-sim-free-pet-giveaway_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/games-like-coin-master_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_off00002f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F36 22396 bytes
SHA-256: dc06425797bce449966f2bc2cbbbf4ed1fc982c19f441e20cb2ff6100e9396e6
font_01_sfnt_off000060d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D9 19060 bytes
SHA-256: 785c7e210a1780b2125656da4f81d97c19b1bb09db9150c4aa1ae66c39ddfc63

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