Malicious PDF — malware analysis report

Static analysis result for SHA-256 53fda43b4a6e3841…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 19:33:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: faee0b8e7b68b99278cb2ddc4007f2ba SHA-1: 87c8d539fccb6eb60905f7d06624b0d6f9b0682b SHA-256: 53fda43b4a6e3841109bf72eb2c5b8cf15a74a6a729a06c60bf0db889646e030
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.tw/app/431946152/real-free-robux-codes-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/gravity-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-gui-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-roblox-accounts-dump_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-can-roblox-account-get-hacked_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-no-skams_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/give-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/bad-busiiness-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-world-free-to-use_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/best-roblox-jailbreak-hack-2021-mod-menu_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/infinite-jump-wearedevs-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-too-hack-in-superhero-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-roblox-dominus-toy-code_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-breaking-point-hack_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_off000034a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A1 22380 bytes
SHA-256: 7d48c3578fd99d51ecd54cba6bacb51c2a6f566800a3ac68729c549bde99d780
font_01_sfnt_off0000666a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666A 18964 bytes
SHA-256: 9bf96aa8fc5477a53da022985f8b40c56c69568a39855eae0c096d595955e7d3

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