Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeced4b367d3e26c…

MALICIOUS

PDF

42.8 KB Authoring application: LibreOffice Draw
MD5: fc0e128cdf376860c7ffd47d56277664 SHA-1: 6fcb8f898c957187e2c96f5c5e12e48f1ee6ec72 SHA-256: eeced4b367d3e26c1a4b34bd625a92d6b3372ec423fc9214b6bf693e945bd7cc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file 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 or traffic redirection. No scripts were extracted from this sample, but the extensive link farm is the primary indicator of malicious activity.

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://singularityventuresgroup.com/uploads/1/3/0/5/130589186/setuzu.pdf
    • http://prodiagno.com/uploads/1/3/0/8/130815097/majurepimenawokivi.pdf
    • http://snkrtrendz.com/uploads/1/3/0/5/130588988/pagebi.pdf
    • http://teachoco.com/uploads/1/3/0/2/130272509/9768804.pdf
    • http://walkingmyth.com/uploads/1/3/0/6/130621703/5744879.pdf
    • http://hostmaster.colthropmanor.co.uk/uploads/1/3/0/3/130379162/63bdc8.pdf
    • http://mx.heirloomtattoo.com/uploads/1/3/0/7/130738854/9237957.pdf
    • http://wickedlybeautifulone.com/uploads/1/3/0/5/130539599/bdba1106b.pdf
    • http://www.impuestosinteligentes.com/uploads/1/3/0/7/130738499/jofalanagijarazo.pdf
    • http://saltandswamp.com/uploads/1/3/0/4/130478433/pisorapam-soziruv-xidowemax.pdf
    • http://cpanel.everymomentcountsfoundation.org/uploads/1/3/0/9/130969565/9696128.pdf
    • http://www.crossfit308.com/uploads/1/3/0/7/130776790/bamuxuzitopo_nowajiletakog_teturubo.pdf
    • http://www.uaeara.com/uploads/1/3/0/5/130545885/lakele.pdf
    • http://ncsportsperformance.com/uploads/1/3/0/2/130272994/a79bef.pdf
    • http://inside-the-distance.net/uploads/1/3/0/7/130776508/tiwirefe_fefavede_wewazigo_mabesi.pdf
    • http://rachelpendergraft.net/uploads/1/3/0/5/130546759/xeranumol-vubakiposu.pdf
    • http://qualitycareafh.com/uploads/1/3/0/2/130270796/130270796.html#rutina+semanal+gym+para+aumentar+masa+muscular+mujeres

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003284.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3284 16036 bytes
font_01_sfnt_off000049eb.bin
2a5ccfa01f88862f6bc99cbb888c1495dec0c44494c36fcdb0fe0f4d7d527a3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49EB 8900 bytes

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