Malicious PDF — malware analysis report

Static analysis result for SHA-256 e334816f54d79559…

MALICIOUS

PDF

38.7 KB Created: 2021-05-21 04:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36f1743f338d6566c0f04925a73dfba0 SHA-1: 8f660094a0e9e19101bf9be3f32a8248c57409ed SHA-256: e334816f54d795595c9d3140283a6f7d4366b885399ecf244ace92f302a6416f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, masquerading as a "free generator / game hack" lure. The document body and heuristics indicate a clear intent to redirect users to malicious sites, likely for further exploitation or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/406889139/free-spins-coin-master-links-2021-game-hack In PDF document text
    • http://arthakranti.org/images/hack-client_GM479516143.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/robux-free-com_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-free-gold_GM406889139.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
stream_002_off00003352.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3352 25164 bytes
SHA-256: 89746cfbd0d9cbe17999c1e347c02d104b6421061dd5bd28ffbbf81bc86b90d8
font_01_sfnt_off00006b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000751d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751D 18456 bytes
SHA-256: c809cb62993c96a2792eb05fd7593de41ec7ce02e3f179f2cd9cbcb899f0cf70

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