Malicious PDF — malware analysis report

Static analysis result for SHA-256 096995b1f2b5b280…

MALICIOUS

PDF

42.1 KB Created: 2021-05-18 06:13:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4724e715f78841671aaf92b552029932 SHA-1: 61a3eafbf474d9d51447369a596b1125d659f113 SHA-256: 096995b1f2b5b280fe508d57915789dfba98669db16f3c6f55b81eb9a234e755
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "free spins". The primary lure directs users to a URL associated with malicious infrastructure, likely to download further malware or redirect to phishing sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to trick users into visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-tower-defense-2-hacked-game-hack In PDF document text
    • https://www.romedia.gr/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-download_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-800-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004864.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4864 25188 bytes
SHA-256: 3b92f8641492e352c08c7d91410ae461fbc6e19b63b2fb0f7602c8f826bc3fe6
font_01_sfnt_off0000817e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817E 18508 bytes
SHA-256: dfa7fded366e42e453bad8f972622469f3be5fd523f8d87af1dd357da012015d

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