Malicious PDF — malware analysis report

Static analysis result for SHA-256 d589f4cb8a221dc8…

MALICIOUS

PDF

33.0 KB Authoring application: LibreOffice First seen: 2021-10-23
MD5: b618d24defd49f4c048d76a299dc6b08 SHA-1: ae42005c03ed4ffe3d903ac85ab7e398426b7524 SHA-256: d589f4cb8a221dc8e2011fd1e1bd1c4672e5b7c67b9cfc9672e3154525026516
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, with the embedded URLs likely serving as a lure for phishing or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 https://temawonaribakiz.weebly.com/uploads/1/3/0/5/130540293/eba5a7e1e252ea.pdf In PDF document text
    • http://quillesthon.com/uploads/1/3/0/5/130590637/durodig-najabumo-nunixotezopo.pdfIn PDF document text
    • http://sofozir.tddetstvo.com/uploads/2020/01/29/xixuzixafe.pdfIn PDF document text
    • https://vupuvoxubuzusu.weebly.com/uploads/1/3/0/2/130289550/10835b.pdfIn PDF document text
    • http://socalseas.com/uploads/1/3/0/5/130539054/rifiputazur.pdfIn PDF document text
    • http://shoretvohio.com/uploads/1/3/0/6/130604446/bedosojelagor_vemupewom_foxasuwanal.pdfIn PDF document text
    • http://scotlandvillemagnethsep.weebly.com/uploads/1/3/0/3/130323374/fozan.pdfIn PDF document text
    • http://nipu.rurostelekom.ru/uploads/2020/01/28/dozaseba_wuvuje_rodikoba_xarem.pdfIn PDF document text
    • http://smpcreditrepair.org/uploads/1/3/0/5/130551704/mululixofidumu-nomatoxis.pdfIn PDF document text
    • http://zos.posox.ru/uploads/2020/01/28/5652912.pdfIn PDF document text
    • http://caddielands.com/uploads/1/3/0/4/130476974/xipififodigatad.pdfIn PDF document text
    • https://gemajupiwer.weebly.com/uploads/1/3/0/5/130588518/3f3f02a.pdfIn PDF document text
    • http://dmytro.it/uploads/2020/01/28/getiwizi_rafek_jaxitano_luxurawese.pdfIn PDF document text
    • http://studentsandcharacter.com/uploads/1/3/0/6/130604145/b067359c31d.pdfIn PDF document text
    • http://vijenaran.mactak.center/uploads/2020/01/28/9716240.pdfIn PDF document text
    • http://cetai.org/uploads/1/3/0/2/130273798/dbc5a2bca.pdfIn PDF document text
    • https://ginemuvu.weebly.com/uploads/1/3/0/2/130287992/bisubebi-farutazojimus.pdfIn PDF document text
    • http://harlowridgefarm.com/uploads/1/3/0/2/130289623/14beb9d837f.pdfIn PDF document text
    • http://595corporateparkofcommerce.com/uploads/1/3/0/4/130436182/130436182.html#possessive+pronouns+exercises+docIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1552 8140 bytes
SHA-256: d7945465be8d80cf371ea63c8aa9acda9cb82935487c0972b4a6071cabca4a20

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