Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e6443fae6b056e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-07 06:36:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 976fcb9706786e04f924f7428d98aafa SHA-1: 5ed1dd6ebc64e1c550fb098cdc65a37b55cb9185 SHA-256: 49e6443fae6b056ecde650980b2c76be5cd6b004b0e60867344518b3c362d420
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 0.9980

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/431946152/demon-roblox-game-hack PDF link annotation
    • https://www.knjizara-harfa.rs/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/omggh-new-roblox-hack-lumber-tycoon-gui_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-hack-2021-redeem-card-codes_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/april-2021-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-nowcom_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-limited-button-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/get-free-robux-and-bc_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
font_00_sfnt_off00002f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F86 22648 bytes
SHA-256: 2b8956a569ed1f28c39e29fdb78df9e43b6fcd60317676d1beab39ebfe5eb7b6
font_01_sfnt_off000061f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 18912 bytes
SHA-256: a40cbd8e4481698280ba06ff7e008e34ec07e7992da08caf1feb739e7f80d510

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