Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d735433b6e7cff6…

MALICIOUS

PDF

44.0 KB Created: 2021-05-18 05:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cdecde1a60b36a0db4b2f0783db4bb80 SHA-1: a14d0d206075541d236c1f65cdab4ab03a323f6a SHA-256: 6d735433b6e7cff69e2226c21e67fd689fb820baa1a234f3b437d309b18d3ca0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, specifically promoting game hacks and cheats. The document body and heuristic firings confirm the intent to lure users with deceptive content related to popular games. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-hack-using-lucky-patcher-game-hack In PDF document text
    • https://ccej.lviv.ua/images/roblox-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/cheat-codes-for-coin-master_GM406889139.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_off0000481b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x481B 30148 bytes
SHA-256: bcdebb1ac2ca2603b137106af772d7256a23700483b274f3053681fd3447de78
font_01_sfnt_off00008802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8802 18832 bytes
SHA-256: 2cd4bfabdd56e5db7574a9ce92a7cad7f1521c02cad56c3759cae2546db8459f

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