Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eae79fc9e40250e…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 04:53:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b27e2d2e7715be687de217b18495ee32 SHA-1: aa18eb54ef37559e97748edc99ee62a549a8edb3 SHA-256: 2eae79fc9e40250ec4990a9bce57be7c958bd54af02aba27f12743d3c7e47de1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded links also reference game-related hacks and generators, indicating a social engineering attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/406889139/coin-master-daily-spin-free-game-hack PDF link annotation
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-clothes-on-roblox-without-builders-club_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-now-no-human-verification_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/play-free-roblox-war-games_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-giftcard-at-robuxcom_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-bubble-gum-sim-free-pet_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-city-tycoon-2-cheats_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/como-hackear-juego-coin-master_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
stream_002_off00003363.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3363 22832 bytes
SHA-256: 7aa565a31bdc8e0852eb83eabbd1c59172e3096986f3675f780976a64c002281
font_01_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 18596 bytes
SHA-256: 4bd887bddad3707660fa4e91161c1a16423faf42318738ff8904c415139aa447

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