Malicious PDF — malware analysis report

Static analysis result for SHA-256 094075a84d0c4a1f…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 05:44:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 67d08973fecd2f0af3205d957035d1fe SHA-1: c690fe70221723c04a4469b080fd17676992502b SHA-256: 094075a84d0c4a1f30be655c9fa6ea39c5242eae36a7e4f3de81c0214f6af7cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirector infrastructure, disguised as a lure for game hacks. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-mac-free-game-hack In PDF document text
    • http://ines.co.rs/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/bloxland-earn-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
font_00_sfnt_off00004b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0A 24896 bytes
SHA-256: 8f55e62fcfdd2ed473b41bd813eb3240ddd361b9ee084686f47b2223d24a8dd8
font_01_sfnt_off00008415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8415 3092 bytes
SHA-256: 3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
font_02_sfnt_off00008ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBF 17568 bytes
SHA-256: 2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc

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