Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b78d0bbf2790e1…

MALICIOUS

PDF

29.5 KB Created: 2021-07-19 01:03:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ff79ac6e875f8d177b7d4d6ce4592dc3 SHA-1: 562139c17922ce41f80fbd47bdc44acbab8f2ff1 SHA-256: d2b78d0bbf2790e1ef4ee9ffdb50f7f781b26b1387c3ccaf6ab3256a2573d7cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' for popular games. The document body includes a call-to-action phrase 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' and directs users to a URL that likely serves as a lure to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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.tw/app/479516143/is-minecraft-free-game-hack In PDF document text
    • https://www.impactfoods.co.uk/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn 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
font_00_sfnt_off0000253a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x253A 21376 bytes
SHA-256: 7716b698ac7da9aa461806a0691ddd96808ae5bf5928dc8c51f5c65e3a46f0f7
font_01_sfnt_off000053be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BE 17568 bytes
SHA-256: 44c16732000c578f47393ad484896351af84166fbd5efffd5af9fb6697599acb

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