Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c99ea78b14ca5d…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 20:16:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3b505f35d29a1d726734750103130d69 SHA-1: 51fb16475183ac215f2324dfe99d8a0375eef5a8 SHA-256: d7c99ea78b14ca5d4f135cf96bdfdc95f1c141004dcf2cbc8674fde92e6b8c6c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, directing users to a suspicious URL. The document body, though partially corrupted, contains text related to game hacks and the malicious URL. The presence of multiple PDF-specific heuristics and the ML classifier strongly suggest malicious intent, likely to redirect users to a site that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/how-to-get-hacks-on-minecraft-game-hack PDF link annotation
    • http://papelesyempaques.co/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/mc-update_GM479516143.pdfIn PDF document text
    • http://papelesyempaques.co/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/e-free-roblox_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
stream_003_off00004b0d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0D 24544 bytes
SHA-256: 29ecd382a1074c20a7f237959e5c654246edc7503fbe331c989129896d395c2f
font_01_sfnt_off00008369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8369 18044 bytes
SHA-256: 9f1e79a3b07781afcdd90921eb79530491bd6e36a063b246dd64f6dc9a4bd67a

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