Malicious PDF — malware analysis report

Static analysis result for SHA-256 66338c749f13952c…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 20:19:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a79029c1f17b88fd11112073b6dc1664 SHA-1: 69d4805a71b4ed987f2a8d0319e5cfb12d67b70c SHA-256: 66338c749f13952ce7b1b7e2e9ef4c36ad8f27e67bee4115a67f55fde2f5b665
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting a 'game hack' lure. The presence of a visual download button further supports the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/minecraft-hack-client-download-game-hack In PDF document text
    • http://arkivthy.dk/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/rbx-com_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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
stream_003_off000047d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D7 25144 bytes
SHA-256: 5327b50f0683dc276c8a92b35e9d7df8c23452f851472836cbe7e60c07ed22a6
font_01_sfnt_off000080d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D4 18460 bytes
SHA-256: f0322949221cc4e2c5002b867d751862f4cd6735e4a5ba01a0e5101b475bc55e

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