Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b7c535390a0ab17…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 20:16:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 87597d22b69fd1419bea78b753577819 SHA-1: 6d0731c1e8a31afe822e86a4ead649c4e64dbb12 SHA-256: 0b7c535390a0ab17e10052b475714779c16af74bd67ca6683202f1f7ab1210d0
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one that redirects to a 'game hack' lure. This indicates a phishing or scam attempt designed to trick users into visiting malicious sites. The presence of multiple links and the redirection infrastructure suggests a coordinated effort to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/como-hackear-roblox-para-conseguir-robux-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-builders-club-account-generator_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-flee-the-facility-cheats_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-robux-generator-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hack-for-roblox-that-works_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-inspect-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/get-robux-for-free-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hack-no-subscribin-to-work_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/sites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-how-to-get-free-robux-promo-code-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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
font_00_sfnt_off00002f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F05 22300 bytes
SHA-256: d7ccb6c5787cc277ea48a31ef9af3206fa46e1cb7521cbf742db4113bfc47c54
font_01_sfnt_off000060bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BD 19332 bytes
SHA-256: 4189fb5a5b1ddf9192b026f6376970d2b25f6ff9da29a3b04e7063ab676cac49

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