Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c101267a19dc9a…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 03:39:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5d4cb10021cbe436d303a30e19fca856 SHA-1: 56e309a997dd84077303b2a6f98e9be7aee51816 SHA-256: f6c101267a19dc9a29ef18f64572afb416d8d0cff70c1f674aa77338bfcc430d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically identifies this pattern. The ML classifier also strongly indicates maliciousness. The document likely serves as a phishing or malware distribution vector by redirecting users to potentially harmful websites.

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/406889139/coin-game-game-hack PDF link annotation
    • http://santeh-40.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-free-coins-and-spins_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_003_off000047be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BE 24872 bytes
SHA-256: 4c3823376dbaf33ab92f119a2947e45360f4e5181443a8aa43b01c9cea6fa8c9
font_01_sfnt_off0000812f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812F 17700 bytes
SHA-256: b93d612aafaf320a9faae270f9b704b5d16f035777fe6e7ab5087b19b273c749

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