Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f7b4aa74cec0ba…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 14:41:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2e5507cb84fc31ecbb7243bf9f801190 SHA-1: 3f229f19c437a8b7793afda86f7a8da06b108a9d SHA-256: 94f7b4aa74cec0bac2a9a1e1f9c9fc3512dca41db67574e1b7ebb3e7c03c5bab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a known malicious redirector. The embedded URL, http://netcdn.co/app/431946152/free-robux-legit-no-human-verification-2021-game-hack, is associated with malicious redirector infrastructure. This suggests the document's primary purpose is to trick users into visiting potentially harmful sites, likely for further malware delivery or phishing.

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/free-robux-legit-no-human-verification-2021-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-use-winrar-for-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/auto-clicker-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/reaper-quest-cheats-engine-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-2021-not-fake_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-easy-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-app-download-pc_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-pin-codes-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/4jcom-free-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-out-of-the-consule_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-for-design-it-roblox_GM431946152.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
font_00_sfnt_off00002ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED1 22532 bytes
SHA-256: b727fa39d104cf6e1d89843085552cf7ec4139ba95035208233f42ce1a38fa71
font_01_sfnt_off0000615b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615B 19736 bytes
SHA-256: 9c2b0739c57a02da0247dc3c5b441d077662680f4b79045629dd77357caba27e

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