Malicious PDF — malware analysis report

Static analysis result for SHA-256 320e154e96b5af46…

MALICIOUS

PDF

36.3 KB Created: 2021-06-20 04:55:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e21f843c5b52bbce3703f4995382478b SHA-1: 567f9214f2ac08dbeb0e1d916c43e5cf6580bece SHA-256: 320e154e96b5af463b2fcf28acdc3266bbddcc6ebc89634e524a3faa0091f010
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/gear-online-hack-scripts-roblox-game-hack. The document body and embedded links suggest a lure for game hacks and free items, a common tactic to trick users into downloading malware or visiting phishing sites. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly indicate a malicious intent.

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/gear-online-hack-scripts-roblox-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-noclip-hack-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/scratchyofficial-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/esp-xray-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/windows-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coinmaster-blogspot_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
font_00_sfnt_off00003487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3487 23148 bytes
SHA-256: 6f73c1328e92b7d28eaea137b1ac92031cfb8651236117e406c15822901e3103
font_01_sfnt_off000068c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C7 19056 bytes
SHA-256: 576848f94ca9dd76f71f1237d440e740de5ecb7cd15ccaea6bcfb66cf646b6ff

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