Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd7e661212d6d25…

MALICIOUS

PDF

39.7 KB Created: 2021-05-21 00:51:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af194d2cd3ee778ad45ac0da68451e80 SHA-1: a3b9d13d1c397cb743000a84200134be8979ef52 SHA-256: 8dd7e661212d6d256503578f9387f9fa76b3d441bf58808fda98a0daee47f9b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and websites offering 'game hacks' or 'generators', indicating a lure for users to download further malicious content or engage in phishing. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8015

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/roblox-hack-apk-game-hack In PDF document text
    • http://rushxpress.de/images/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://rushxpress.de/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://rushxpress.de/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rushxpress.de/images/100-free-tiktok-followers_GM835599320.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_off0000338a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x338A 24760 bytes
SHA-256: deab6c7f5761fe0c94c25d01840ed5fcc79ce4c4baacff1a7d347dc9be2317fb
font_01_sfnt_off00006c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000792f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792F 18356 bytes
SHA-256: 7cdc4109e76722f5b523df4cd1b295e2212ddbe91aca110ba626f8c95e058f26

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