Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ab401a6e1817f7…

MALICIOUS

PDF

36.2 KB Created: 2021-05-22 19:16:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d05ec92f9d10a795d13ab53648b4eeea SHA-1: d4cbd186bae688e738051729ec6a995ab4df9b78 SHA-256: 15ab401a6e1817f7d495cf2f2ef9f04c81b782e3f85e2c4270a4a0757e008331
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising a 'free generator' for a popular game. The document body and embedded links strongly suggest a social engineering lure to drive traffic to malicious websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-online-free-no-download-game-hack In PDF document text
    • https://www.iadh.bi/images/_GM479516143.pdfIn PDF document text
    • https://www.iadh.bi/images/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://www.iadh.bi/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.iadh.bi/images/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://www.iadh.bi/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_002_off000032d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D6 24852 bytes
SHA-256: bef28ab9a8bfe4fea5adad0c11e70870e810e91b4601aeed5ee63c428feba4f0
font_01_sfnt_off00006c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1B 18292 bytes
SHA-256: b061ada675b676782f5f9f5eef39691e0700ad1698d2269622484eea1080e831

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