Malicious PDF — malware analysis report

Static analysis result for SHA-256 759da2474aba7cca…

MALICIOUS

PDF

45.8 KB Created: 2021-05-15 05:12:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd5c2afb1b4a361c48a83a981fc5a2ed SHA-1: b4466c9a8c777a79a8560d446129acad70e45c0c SHA-256: 759da2474aba7cca417c2c72fadf122c46e382a4012f99d49ff0f9e79e56ebdc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hacks or generators. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-roblox-boy-hair-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt, likely intended to deliver further malware or lead to credential harvesting. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/431946152/free-roblox-boy-hair-game-hack In PDF document text
    • http://per-bittner.de/images/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/krnl-download_GM431946152.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_off00004866.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4866 25324 bytes
SHA-256: b313a4068f3250d40d73c5403e6e92f212f7c0d1a0ea362f332cda7d012c6bb7
font_01_sfnt_off0000837d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837D 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9024 18476 bytes
SHA-256: abd17b12d4ec9235048d2e50423b5fb352a1237d763ee393d990d2a1127b11f9

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