Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f33e97d389c361…

MALICIOUS

PDF

47.5 KB Created: 2021-06-11 11:53:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3b86993eaad8e9edcd3331027d85aced SHA-1: 6a61e981efb4f37cda317901ac14829158cf2446 SHA-256: a6f33e97d389c3616b06298ede2363880432c8306b3b75d19fa8ac67242989b9
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 0.9769

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 https://netcdn.tw/app/431946152/roblox-free-online-no-installing-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-how-to-make-a-game-thumbnail-for-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/tiktok-free-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-hack-roblox-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-anthro_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-clothing-hack-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/50-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-orby-for-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-make-robux_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D2 24848 bytes
SHA-256: 7b4b03c28d1e4eeb3944497987baa3d887567d2aecd26ec134304fe734d3ae0d
font_01_sfnt_off00008aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFF 3112 bytes
SHA-256: 471f662098e83c5562504503f5e7603b336ca0957605358090bb98e15c7aed80
font_02_sfnt_off000095b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B9 18688 bytes
SHA-256: 54bfa7566d5b9cd6375e62fd04eb2cdbf02a88a3334a5db7767f21369caf5c04

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