Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e66a279850712e0…

MALICIOUS

PDF

31.7 KB Authoring application: PDFedit
MD5: e50869cd898abada3ee77d3a777106fc SHA-1: baac7af90a99408c0fbf9244dbdbd8e8b33483d8 SHA-256: 6e66a279850712e07c8ea6260e3340a84510b02639e32308a1f6c94d016a2e3e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, as detected by the PDF_SEO_LINK_FARM heuristic. This technique is often used to manipulate search engine rankings or to distribute malicious payloads. The ML classifier and ClamAV also flagged this file as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://fetalcardio.org/uploads/1/3/0/2/130271224/9007394.pdf
    • http://sane.rol30.ru/uploads/2020/01/28/f6199eaa4f9b.pdf
    • http://livasixo.finni.ru/uploads/2020/01/29/gemetuwaxa.pdf
    • http://paintingcontractorct.com/uploads/1/3/0/5/130550787/tewanijunupa.pdf
    • http://ocholistictherapy.com/uploads/1/3/0/3/130313555/3909760.pdf
    • http://ortaklargrup.net/uploads/1/3/0/3/130323151/9863062.pdf
    • http://gertieandruth.com.au/uploads/1/3/0/7/130738524/fdde02d5cf0b.pdf
    • https://dufonibofewatux.weebly.com/uploads/1/3/0/4/130436367/gagosiven_mabanolu.pdf
    • http://southwestflaadom.org/uploads/1/3/0/2/130270931/zinevixes-jevizubetifu.pdf
    • http://rxtraining.ca/uploads/1/3/0/2/130271161/xeraxamov.pdf
    • https://polasopakiminup.weebly.com/uploads/1/3/0/2/130291033/vazagulesofulemojim.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/4/130475918/130475918.html#elektrik+%C3%A7arpmalar%C4%B1+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000144c.bin
9062794ed434aefc9d2e59c6d184c8aeaf4a40096b2e105de1a3082760452e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144C 9064 bytes

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