Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a657bb82473b60…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 12:07:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f27cab5ae7c8d58836864cbde9556244 SHA-1: dd757548db1a60805762500aac943baa7528582a SHA-256: a8a657bb82473b60b6610987894c64e052eef13d7d37132b5829d8419f218cbd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The primary malicious URL identified is https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-ipad-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely using social engineering to trick users into visiting malicious sites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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-for-free-on-ipad-game-hack In PDF document text
    • http://baah.ca/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://baah.ca/images/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://baah.ca/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://baah.ca/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://baah.ca/images/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://baah.ca/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://baah.ca/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://baah.ca/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://baah.ca/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://baah.ca/images/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://baah.ca/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://baah.ca/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://baah.ca/images/coin-master-free-spins-link-download-apk_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_003_off0000484d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484D 24380 bytes
SHA-256: 23ceef0f516ea232e1e2f0cbc6fb18e8d07796a76a2de09a11e71275ed71e135
font_01_sfnt_off00007fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCA 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000089d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D9 18224 bytes
SHA-256: 9e691df568453236f4d0ad162bd2f3ab3ed053816089b7695d089a9ceca8acc7

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