Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9273b265176e74…

MALICIOUS

PDF

46.0 KB Authoring application: OpenOffice Draw
MD5: 806958f5d293bf34c4273aa389899530 SHA-1: a5df5b94c445ea7c39b58a15b8e64b10241aab1a SHA-256: 5f9273b265176e7444660a1e45dfdff8145fc37c7c657d3da1e2dd012cf4d538
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was detected as malicious by ClamAV and an ML classifier, and contains a large number of embedded URLs. The heuristic 'PDF_SEO_LINK_FARM' indicates these links are likely used for SEO manipulation or to host further malicious content. The document body itself is largely unreadable due to encoding issues, but the presence of numerous external links suggests 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://radiopeopleitaly.weebly.com/uploads/1/3/0/5/130550969/3c237be226881.pdf
    • https://wapuravedowewef.weebly.com/uploads/1/3/0/6/130604947/dce83edaa1a504.pdf
    • http://nerorem.koenigruz.online/uploads/2020/01/29/lerugova_visozo.pdf
    • http://jefiwov.tral62.ru/uploads/2020/01/27/5041341.pdf
    • http://biblewordstudy.org/uploads/1/3/0/5/130551927/bemixoxasiwope.pdf
    • http://rokuvad.biofermentor.net/uploads/2020/01/29/kufofe_japibofitabed_koguwomapika_bivuxazugage.pdf
    • http://bronline.club/uploads/2020/01/29/5412238.pdf
    • http://30985188.nhd.weebly.com/uploads/1/3/0/2/130271219/1056973.pdf
    • http://mapujerabe.alfavent.info/uploads/2020/01/28/zelawomodeza.pdf
    • http://atlantadentalanesthesia.com/uploads/1/3/0/6/130640069/6617878.pdf
    • http://mentortreecare.com/uploads/1/3/0/3/130379098/8508898.pdf
    • http://tcsonline.net/uploads/1/3/0/3/130323298/130323298.html#what+is+the+meaning+of+the+symbolic+interactionist+perspective
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001311.bin
f103df04db0ee4e7b87c70528199d4b3fbb550606eefa3a1778c2345797f8cf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1311 7956 bytes
font_01_sfnt_off00006dc2.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC2 16036 bytes

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