Malicious PDF — malware analysis report

Static analysis result for SHA-256 338398f3319ebd17…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 07:07:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 654dfbf4ef8d3a53871c3b07e1f3f1ac SHA-1: b95f02ec71565b29038b32909a5e62e3d089b5d4 SHA-256: 338398f3319ebd17b43856d6004f784724e65673bec5ddc814f462ae3564cd23
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a 'free generator' or 'game hack'. The document body and heuristic firings confirm the intent to lure users to this malicious URL, likely for further exploitation or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-legit-pc-game-hack In PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-login-free-play_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-no-wait_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/how-do-you-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-get-free-robux-and-obc_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/how-get-robux-free_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/dll-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-notepad-hack_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/how-do-i-get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/robux-sites_GM431946152.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://www.sarrafoods.com/uploaded_files/userfiles/files/minecraft-pocket-edition-mods-for-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
font_00_sfnt_off00003248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3248 22396 bytes
SHA-256: 319a67370a1eb84578c1bdef1bc9edaa5e140d5b2f4d9eea4f21f837704653ef
font_01_sfnt_off000063ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EE 19260 bytes
SHA-256: 06ebbcbe5d2b909807312f6c79213d897805105700de1122eb77ad6e1273b72d

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