Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e933e08e2926e7…

MALICIOUS

PDF

231.5 KB Created: 2021-06-24 10:41:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0af3b90cec027008185e4963df96289a SHA-1: bd32b864a9daa46c007b6fef5dacce11ab968867 SHA-256: 09e933e08e2926e7657bf9628772e700bd898cb011a7280f3e7a419e1e742e77
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising a 'free generator / game hack'. The embedded URL is a known malicious redirector. While no scripts were explicitly extracted, the nature of the links suggests an attempt to lead the user to a site that may host further malicious content or exploit.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2562

Heuristics 3

  • 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.
  • 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/1330123889/pubg-uc-free-hack-game-hack In PDF document text
    • https://www.advancissurgical.com/uploads/files/files/master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-lego-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-how-to-get-robux-for-free-2021-no-inspect_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/robloxhacks_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hack-exploit-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-hack-get-infinate-money-on-bloxburg_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/dday-hack-script-roblox-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-sexually_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-items-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_024_off000380d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x380D3 10445 bytes
SHA-256: 73fb4b7a28e975755bbd0038beeb89a254afe1052bf11f9d414bf0be282b764c

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