Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5846b326cd0ce1…

MALICIOUS

PDF

36.5 KB Created: 2021-07-01 20:57:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 52da503e274ca1d29fa579424fcb3d61 SHA-1: f238c7f789d21493a0c044935b2e212faf2985f5 SHA-256: 2e5846b326cd0ce181b4a1839cd2dd0ad191431a3103ddbad82373e4f9706fa7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing 'free Robux' and 'game hacks', directly aligning with a common lure for scams or malware. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms that the embedded URL leads to a redirector for such content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document body and heuristics point to a phishing or scam attempt.

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/how-to-get-10k-robux-for-free-2021-july-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-do-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-download-ios_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-robux-hack-pc-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-gamepasses-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/i-will-hack-everyone-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-shiny-charm-for-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-secret-cheat-codes-for-music-its-raining-tacos_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-hack-2021-no-human-verifaction_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hacks-for-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-often-pubg-uc-benefits-paid_GM1330123889.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_off000033c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C6 22800 bytes
SHA-256: 03a519f4fe728994895e367eefff4861fc751f637932b281be319970f1613d56
font_01_sfnt_off000066a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A2 19976 bytes
SHA-256: b53ab129624146bfead6257766525f0cd3b2f98fb0f57a5cc4d3aca7c9fe2e07

Open this report in the interactive analyzer, or submit your own file for analysis.