Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db7dd996f323efa…

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 19:34:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 75975c8bd587dfecb82d6dc30933a327 SHA-1: 0cee157110cd75e760d6217db77cb85dba766c19 SHA-256: 5db7dd996f323efa92bef8d6a4557302d4f3e06000b7b1024e3fcded1748b012
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'game hacks' to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/how-to-hack-roblox-to-get-robux-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection campaign, likely intended to lead users to further malicious content or downloads.

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.tw/app/431946152/how-to-hack-roblox-to-get-robux-game-hack In PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-pin-hack_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-hack-into-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-change-name-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/babe-free-robux_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-make-stuff-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/free-robux-hack-no-download-no-survey-no-offers_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-dbn-hack_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/descargar-hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/what-game-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-free-robux-hack-no-download_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-maps-free-download_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/youtube-is-getting-a-roblox-account-hack_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000336b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336B 22664 bytes
SHA-256: e3c08df7edfe83539e14070f6968f00610b22300ccaa7ce19ff871c05c743bd5
font_01_sfnt_off0000666e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666E 19064 bytes
SHA-256: c09c9d7fc19f40bea4c428d96fbce770bebbae57e04c6c8aa6719f8a293ea3a2

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