Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e1a264396b9f9c…

MALICIOUS

PDF

33.7 KB Created: 2021-07-02 03:54:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: db9d73ee19ef03a6dc7ca655ec123a87 SHA-1: 1ac39420e815f5f545bcdc7ede9324bc01a9ca88 SHA-256: f1e1a264396b9f9c226f780698f7f9164961330a4efbad7cbb8a8356da9b0015
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.co/app/431946152/2-robux-for-free-game-hack PDF link annotation
    • https://www.e-starmagazine.com/uploads/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/bypass-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/pubg-uc-18_GM1330123889.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-free-printables_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-for-free-poki-com_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_off00002e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E25 22292 bytes
SHA-256: 0bdaeb9bc13019a4cc217383fe0fe4508db08d4447c65ae31efe105ce2eb4255
font_01_sfnt_off00005f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4E 18840 bytes
SHA-256: 12d7fe07633cb2c183790e1e988b16dec43ccb9c36fab2d1793cd91fbdf1dac9

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