Malicious PDF — malware analysis report

Static analysis result for SHA-256 4643a541d6146ed3…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 18:13:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 601a19cff9cad940e6a47f93d6e9df1d SHA-1: cb5022cbc0cc31d4ce9ccccb2b72fc1dcc7a8b71 SHA-256: 4643a541d6146ed37366b8b70fa6472cc988efdf779dc959c3c763691e0a2d9a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'game hack' which redirects to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs suggests the document is designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the overall pattern points to a social engineering attack.

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-hack-programmers-game-hack PDF link annotation
    • https://allhimalayantreks.com/userfiles/files/roblox-ios-robux-hack_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-cheat-exploit_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-free-clolthes_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-2021-free_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-obc-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000328c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328C 23156 bytes
SHA-256: 3b226256c0b1398870a8e83b43a83cfcd25ba22240f28c262daa534d8ef05fdd
font_01_sfnt_off000066d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D3 18416 bytes
SHA-256: 5741a127261724fddf521fc94ebfc06f31583a26a9f94a4c147a021759ab8b48

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