Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff7d4c50347c61d…

MALICIOUS

PDF

40.0 KB Created: 2021-05-22 22:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9da7799a88382a4666c006e5dfbabf63 SHA-1: e6eeaa77031d897821ef1fe2c8038a750a245ba8 SHA-256: 3ff7d4c50347c61d1881c81ad77702a94d25597ca23676bc2b4d0a04a1f7921e
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a lure for game hacks, consistent with a phishing attempt. The document body and embedded links point to a URL that is flagged as a malicious redirector, likely serving as a gateway to further malicious content. No scripts were extracted, but the presence of multiple malicious links suggests a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/how-to-get-minecraft-bedrock-edition-for-free-game-hack In PDF document text
    • http://huebner-baustoffe.de/images/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://huebner-baustoffe.de/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://huebner-baustoffe.de/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://huebner-baustoffe.de/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://huebner-baustoffe.de/images/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://www.freenom.comHeyIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003792.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3792 26124 bytes
SHA-256: 60d0c194fdf35c3c4f60287e56197d51b2a24859bc5a9590a9a8bfd016e6664a
font_01_sfnt_off00007095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00007a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7E 18436 bytes
SHA-256: 3a0999d30397def23c47b5d80e97d9b0f28df4cbffb45a09cf4ec0f6b7597619

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