Malicious PDF — malware analysis report

Static analysis result for SHA-256 179516307860ee5e…

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 21:10:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6a177bf65edece5b3ac6994ba1f68922 SHA-1: 7ee7113e0ee0e5313b55ce7d984a095d18e91812 SHA-256: 179516307860ee5e1d5ad35b1f970c69733749cfd1386a4c5865faaf16888ce4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/free-spins-coin-master-no-verification-game-hack PDF link annotation
    • http://whiteyaknepal.com/userfiles/files/robux-giver_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://whiteyaknepal.com/userfiles/files/apps-for-free-robux_GM431946152.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_off0000476c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476C 24084 bytes
SHA-256: 9ca48ae028dd6b9031d4c05e8cf00615306a225c1db2a0604dbd6d2beb0442f9
font_01_sfnt_off00007cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD5 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off000086ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EF 18020 bytes
SHA-256: 77b170e61ca69d8811d571f4609d25c793482ce418daab97f8cf0cf89b73ec51

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