Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb94ab1a7486bb89…

MALICIOUS

PDF

42.1 KB Created: 2021-05-21 15:29:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b68bd09b87e6d64fdbaddbb55922a4b0 SHA-1: d7472ad286e4e28ce125729838188405376ee03a SHA-256: fb94ab1a7486bb89088533bf8feed198c3851bd6382af008a2c79bb228ca3080
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users with promises of free game currency and hacks. These links point to a known malicious redirector infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the malicious intent of redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7429

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-robux-gift-card-codes-2021-game-hack In PDF document text
    • https://grovehilloutfitters.com/images/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/is-there-a-way-to-get-free-robux_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_002_off000035b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35B2 29788 bytes
SHA-256: aef5c77eea303d6960d0ec7e73ab718c4ce5001ad7c230eb80b38d1070d89d3e
font_01_sfnt_off0000772f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772F 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000080e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E0 19044 bytes
SHA-256: a83203ba6d4d8e4db234da74518c811315008a13a6a61ff598d06d89853e7c2b

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