Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f67338258360934…

MALICIOUS

PDF

46.3 KB Created: 2021-05-17 06:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3679a8fdc860d43b3a422ee67b1420e2 SHA-1: 42dbdbf21472e3a4b2648ec45313ed3e8bb10296 SHA-256: 8f67338258360934f0c902acd73c2fe37c7b8b04440acd6f545df25ad569c181
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/how-to-get-free-spins-and-coins-in-coin-master-game-hack PDF link annotation
    • http://geopaper.ge/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/kachifpro_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://geopaper.ge/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://geopaper.ge/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d6e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D6E 25284 bytes
SHA-256: 9a2419bbefe4d642992c296dfa6a61782a43ac40475e50e75536ba1dd47ea247
font_01_sfnt_off00008605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8605 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off0000928a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928A 18224 bytes
SHA-256: 1a177d96c25f70e29c96d18ff08cc0e48255fbbd4539b1ca90a782c549603dc1

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