Malicious PDF — malware analysis report

Static analysis result for SHA-256 64055a8a40c00530…

MALICIOUS

PDF

42.7 KB Authoring application: Nitro PDF
MD5: 90331855558badb79a5e017ad9f8b049 SHA-1: a16bb9ca120fdd93721b191e582d00efad0f1ae3 SHA-256: 64055a8a40c005304c9abfcfe4e20f3d171daa40498f4448b2ea7c1d84a4f86c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. No scripts were extracted from this sample, but the sheer volume of external links suggests a campaign to drive traffic or deliver payloads.

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://sista-dolls-vibrations.com/uploads/1/3/0/4/130435598/segagunotizotut.pdf
    • http://2mdesignlab.com/uploads/1/3/0/7/130776847/dugeroza.pdf
    • http://mylesateliersdenine.com/uploads/1/3/0/3/130324004/vubemejujij_disagenusakiv.pdf
    • http://nextgenadvancedsupplements.com/uploads/1/3/0/7/130739267/6534426.pdf
    • http://study-spanish-educator.com/uploads/1/3/0/3/130379777/2687443.pdf
    • http://www.maxrestvidhost.com/uploads/1/3/0/6/130639883/8324177.pdf
    • http://holypost.info/uploads/1/3/0/6/130621465/lugeruriku-wexagaz.pdf
    • http://bonnetcore.com/uploads/1/3/0/4/130483364/peletovamudosexotiri.pdf
    • http://mycorporatecounselor.com/uploads/1/3/0/6/130639516/dcb66.pdf
    • http://angelasresidentialcare.com/uploads/1/3/0/7/130739311/rakoroso.pdf
    • http://westech-rides.com/uploads/1/3/0/6/130621149/9628131.pdf
    • http://topcryptocurrency.com/uploads/1/3/0/6/130639588/vikinoro.pdf
    • http://nnfilms.shop/uploads/1/3/0/7/130740342/3545656.pdf
    • http://joycejudyfororegon.com/uploads/1/3/0/6/130621298/758c6.pdf
    • http://assistensepay.live/uploads/1/3/0/5/130539227/tovegokigore.pdf
    • http://www.themilkcart.co.uk/uploads/1/3/0/8/130813779/janesomak.pdf
    • http://dailytech.tips/uploads/1/3/0/5/130550732/32b9ee73.pdf
    • http://summitdoulacare.com/uploads/1/3/0/2/130289427/xatixegerex.pdf
    • http://leadershipcv.com/uploads/1/3/0/2/130289592/5368428.pdf
    • http://modajewelry.shop/uploads/1/3/0/4/130477135/292e6a4f.pdf
    • http://kingshotelsmunichfirstclass2.devsite-1.com/uploads/1/3/0/3/130379199/130379199.html#como+mejorar+el+clima+laboral+de+una+empresa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004600.bin
4b9815a54467660ff4bdc6f263c21070e8b721dae5f605378bbaabbd85cce32a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4600 9288 bytes

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