Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede3f402319df511…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 06:48:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f8e3aef31e580a83732ed5aa9fe3f5a1 SHA-1: 84f02b888a58853217ece54cdb91a1d06009964f SHA-256: ede3f402319df511e6bfcf83132c28830bb2cfc5093917a287870e77951fa0c8
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/free-robux-website-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/joedaddy-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-into-a-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-v2-11-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pokemon-go-free-accounts-level-40_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-how-to-hack-piano_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/crate-clicker-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-on-bux-gg_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-with-credit-card_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-2021-link_GM406889139.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_off00003203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3203 22520 bytes
SHA-256: 5ad6818c1fc53c06599135f95a68ae813d381d2dd7bac74e835f67c283124924
font_01_sfnt_off0000643b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643B 19136 bytes
SHA-256: 91d819a85e08464702b4d2399b2944ce52da70a48c8f9d70c1ee064a4c662f69

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