Malicious PDF — malware analysis report

Static analysis result for SHA-256 704429a65fbf6186…

MALICIOUS

PDF

36.9 KB Authoring application: LibreOffice Draw
MD5: 6c6b6d03e9cb267619c1759d2ee5f702 SHA-1: 4bec86e0a0c74c65f1264796c2a3d0b9e55fd9ae SHA-256: 704429a65fbf61866b58eaf71d26ccc39c28ff2aeb5c3d60b840731604b8a37a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or content distribution attack vector.

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://edtnetworks.com/uploads/1/3/0/6/130621958/faec18b40ee.pdf
    • http://disneychristmasparty.com/uploads/1/3/0/4/130475989/dewogis.pdf
    • http://optimum-ats.com/uploads/1/3/0/6/130604203/5dac85d2ff5f6.pdf
    • http://revivereading.com/uploads/1/3/0/7/130776647/litegojum-mesufuridulaked.pdf
    • http://beautifulwomenofdestiny.com/uploads/1/3/0/3/130313196/zomidekotebaxa.pdf
    • http://waiapukidshomebased.com/uploads/1/3/0/4/130483350/demobetamine.pdf
    • http://p4mancestudy.com/uploads/1/3/0/6/130639841/lozudomesewozinibe.pdf
    • http://expressclean.net/uploads/1/3/0/7/130739924/dekititaf-bubulomefado-bufud-pufulelezep.pdf
    • http://247nona.com/uploads/1/3/0/6/130604602/wapodosunebime.pdf
    • http://celerigen.com/uploads/1/3/0/8/130813606/basijevadu.pdf
    • http://www.bestitonline.com/uploads/1/3/0/4/130488691/duteronuvibuwuxabiw.pdf
    • http://frenchfryfoodie.com/uploads/1/3/0/6/130605302/bokam.pdf
    • http://metricaone.com/uploads/1/3/0/5/130588803/rawezifafapox-kunavujegimex.pdf
    • http://nashvilleweaverwedding.com/uploads/1/3/0/6/130620769/1858a5d7cad45c9.pdf
    • http://bitstructure.org/uploads/1/3/0/3/130324440/805f81a45636aec.pdf
    • http://staceycampfield.com/uploads/1/3/0/6/130621197/8647502.pdf
    • http://amarinlagoonhotel.devsite-1.com/uploads/1/3/0/5/130543279/130543279.html#simple+sentence+structure+exercises+with+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003428.bin
ff0ffa7bf662fcaf5b0549739ab7a903150ce43da6f873ac90658d0b363cf7b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x3428 7856 bytes