Malicious PDF — malware analysis report

Static analysis result for SHA-256 14aa6e637cffd751…

MALICIOUS

PDF

36.1 KB Created: 2021-06-25 14:58:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 49a296e947726a13bb8f8dac3d9a6013 SHA-1: cef794aef568a92bb0d577311afae609b5dd46f7 SHA-256: 14aa6e637cffd751001b921138a9b1239e22580a617cc330cf075c3b52d70264
160 Risk Score

Malware Insights

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

The PDF contains multiple links to game hack generators and free item lures, with one URL identified as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading potentially malicious files. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to harmful content.

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/infinite-jump-roblox-cheat-download-game-hack In PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-robux-on-pc-2021_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/roblox-spongebob-hacker_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/pokemon-go-free-incubators_GM1094591345.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

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_off000034aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AA 21936 bytes
SHA-256: c8f09931ba82df3b70bc3d3c5fe50b2d0cf3e3d63c2b12ef4557d74462462265
font_01_sfnt_off000064f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 20124 bytes
SHA-256: 7b564b365fb53f923ea2349f8eafdd92eb5df7a8e2bab1167952dc1aa2da3201

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