Malicious PDF — malware analysis report

Static analysis result for SHA-256 7082c484c140d4dc…

MALICIOUS

PDF

50.5 KB Authoring application: Smallpdf Desktop
MD5: da08476c0e0961d9e35e831caaec501e SHA-1: 2aa8be993b73f23a89cf954ca1262fe2f4b8843f SHA-256: 7082c484c140d4dcec4ce0a70b45347a9ebeed097f86709f4610797decf16d89
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. While no scripts were extracted, the sheer volume of external links suggests a coordinated effort to redirect users, potentially to phishing sites or for further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://www.abilitiessa.com.au/uploads/1/3/0/6/130603942/1628105.pdf
    • http://holidayparty.bocacares.org/uploads/1/3/0/5/130545557/5398683.pdf
    • http://myownbank.co.uk/uploads/1/3/0/6/130621108/1362304.pdf
    • http://fantasyfusionsports.com/uploads/1/3/0/7/130776695/nidixomatomukexave.pdf
    • http://zumbaforacause.org/uploads/1/3/0/8/130874051/lezojakejoriwibetu.pdf
    • http://eldredcinematiccritic.com/uploads/1/3/0/3/130323465/xirufe-farujobidelok-supijugud.pdf
    • http://midwestlegalpartners.com/uploads/1/3/0/7/130776420/wefejuguxuwe_xixapulekok_pepalixab.pdf
    • http://soulintegration.com.au/uploads/1/3/0/7/130776661/563611.pdf
    • http://mayaarchaeology.net/uploads/1/3/0/5/130543640/lujugininab-kagufi.pdf
    • http://www.operaafrica.co.za/uploads/1/3/0/5/130588865/terujokexafipu-badijupomo-loganazusagixet.pdf
    • http://apolloniacampaign.info/uploads/1/3/0/7/130776221/6494047.pdf
    • http://www.sneakersurbanonline.com/uploads/1/3/0/5/130588693/467264.pdf
    • http://screencircus.com/uploads/1/3/0/6/130639222/selap_vumorebel.pdf
    • http://mta-sts.mailserver.jonmccoyart.com/uploads/1/3/0/3/130324418/0e8ed097fad.pdf
    • http://goldenbridgeacademy.org/uploads/1/3/0/2/130289213/e6d80ce34ec2f.pdf
    • http://sta-66-99-58-198.ladse.org/uploads/1/3/0/2/130289365/130289365.html#india+map+hd+image+download+pdf
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001179.bin
9b122e0bfb9f69d3a9b779438eb3f1776b888d32a86b7c958dea03057f39531f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179 7976 bytes
font_01_sfnt_off00007bba.bin
e94a1b6b83a055efd1c159087f6529f3a8708a705ed09df46c8b005a305e80f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 6588 bytes

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