Malicious PDF — malware analysis report

Static analysis result for SHA-256 81f196cc7697e4b7…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 14:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c09ef8fbda2983e564ecf261f878bb4c SHA-1: 6dfb20e5f8b730f037edfe6d02ec9cfbfdd77a10 SHA-256: 81f196cc7697e4b77ce9c74a614d8313e45479d8883f6a5af3bdf9bf19024229
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 0.9971

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/431946152/roblox-hack-codes-game-hack PDF link annotation
    • http://itbits.ie/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/how-to-hack-people-on-roblox_GM431946152.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_003_off0000473d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x473D 26032 bytes
SHA-256: 8a537604cdfe8c7394e0117a0630457159ea4f67bcc9a187af691b7ae56c7e1f
font_01_sfnt_off0000839b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x839B 18356 bytes
SHA-256: 248f759c619fe1c96c576728ba71c16d7d0933fc88833f740ae7987d47f6eb68

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