Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6b306835081971…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 11:07:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5e1bd9527b2772be84f49f8d0f6e9b5d SHA-1: 7a086804836188a92162db3ef0dfe94146c106d9 SHA-256: 4a6b306835081971e5d274048c30b92979b9ed601881f492a5fd38d2ee94d55a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising free game generators and hacks for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a phishing or scam lure designed to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF format and the nature of the links indicate a potential for further malicious activity, such as downloading additional payloads or redirecting to credential harvesting pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/get-free-roblox-generator-game-hack In PDF document text
    • https://www.tsdb.com.au/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • https://www.tsdb.com.au/images/roblox-robot-inc-cheat_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.tsdb.com.au/images/speed-hacks-on-fangs-roblox_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/roblox-health-hack_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://www.tsdb.com.au/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tsdb.com.au/images/roblox-tycoon-money-cheat-table_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/roblox-hack-that-really-works_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.tsdb.com.au/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.tsdb.com.au/images/roblox-cheat-engine-lua-scripts_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.tsdb.com.au/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.tsdb.com.au/images/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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
font_00_sfnt_off00003261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3261 22232 bytes
SHA-256: 9ce95b12dd171db32e18a0795b8aafbefa8578c5baef1a89cceca9850a6d6623
font_01_sfnt_off000063a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A5 18752 bytes
SHA-256: 11c7e26e99f2add7d9e0b9261c0d9255945c72bbeaae0d0cab2585e843b94ad7

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