Malicious PDF — malware analysis report

Static analysis result for SHA-256 2117f9613ecd1378…

MALICIOUS

PDF

48.0 KB Created: 2021-06-07 16:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 95b8937ba8118f80c39d4f0a30c50898 SHA-1: e00d010523ccddf420ecc073a60a41d4e2f4bf86 SHA-256: 2117f9613ecd13787a9c625dcee149ce2cf285d8dc3c76574b234282a9d98a02
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and generators, specifically mentioning Roblox, to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The document's structure and embedded URLs suggest an attempt to exploit user interest in free in-game items or cheats to deliver a payload or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/roblox-hack-no-virus-game-hack In PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-god-mod-hack_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-mobile-360-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-uk_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_004_off0000506a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506A 26480 bytes
SHA-256: b9686bc34252c9e1d9f83fb5dba11f56f8cb33ca582c4f1175b1808126458453
font_01_sfnt_off00008e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5A 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000980b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x980B 18576 bytes
SHA-256: f4b19e65d61732e40eef7abd00c1765c930ab973cf1e622432769a6fc62f088f

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