Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f2dfa428065e54…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 06:09:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1deae1672762b8baa796995ad4df24d1 SHA-1: 4de3bc4cc653622f00ae0cf8b2f664c417b1f8cf SHA-256: 57f2dfa428065e547d5d5473a0f5a539d59006e59a7c9bb6974a9154eaa2650b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/command-for-test-all-the-roblox-gears-free-admin-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hack-por_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-just-need-pass_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-free-admin-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-in-lumber-tycoon-2-roblox-any-game_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-vip-servers-roblox-strucid_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/script-cheat-roblox-mad-city_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pubg-uc-94fbr_GM1330123889.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robux-gainer_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-cinnamon-hair-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000032b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B5 22508 bytes
SHA-256: 2bbe9c1e3afcca663df48b5820f4680a5107a2169de86409411da26be9db86d4
font_01_sfnt_off000064fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FA 19472 bytes
SHA-256: 4adb7ad62363c52592985b03f9aa2eb8f51b79aa81b7c2b60096d7c592e7601c

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