Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f5d8820ddcdc97…

MALICIOUS

PDF

39.1 KB Created: 2021-05-20 17:40:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a01c9364d1a2e9ccd2f879e47d655d5 SHA-1: d55242c59367acde534dee9d4fc594b67c73524a SHA-256: b2f5d8820ddcdc9709d712562085ab6a9f003a3583dd0af09b80daa9d0781eef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks. The document body includes a call-to-action phrase and a prominent link to 'netcdn.xyz', which is flagged as a malicious redirector. This suggests the primary goal is to trick users into visiting a compromised site, likely to deliver further malware or engage in phishing.

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/479516143/hacks-for-minecraft-windows-10-game-hack In PDF document text
    • http://www.alpaca-buitensport.nl/images/pubg-uc-online-generator_GM1330123889.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn 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_off00003306.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3306 24948 bytes
SHA-256: 96e6647eddee8295eb184dafc1fd8747dac66e40805de345211dfadbe316338a
font_01_sfnt_off00006c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off000075d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D5 18696 bytes
SHA-256: cd39c091a68a2846e65319e0aedb696a747600c4d9ed3e222f28c6d266d57a0c

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