Malicious PDF — malware analysis report

Static analysis result for SHA-256 617da254dda33811…

MALICIOUS

PDF

43.2 KB Authoring application: LibreOffice
MD5: 8f328b3dfa53513776659a8a1b45e7bd SHA-1: 6afd2ba216bceec92faa5f9c4c4641d8cae88592 SHA-256: 617da254dda33811155639464ec5a08f869032577b2f090910c99d18e6b9c7a6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. This suggests a tactic to manipulate search engine results or to distribute further malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing malware.

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://westcoastpawstransport.com/uploads/1/3/0/5/130542983/xosakiravo-narizapufifage-xuxapixulav-xivokijo.pdf
    • https://zajamedimol.weebly.com/uploads/1/3/0/2/130289495/8131548.pdf
    • http://vupo.sitol.ru/uploads/2020/01/28/dobijatare.pdf
    • https://vonuduxovo.weebly.com/uploads/1/3/0/3/130323709/f36e6.pdf
    • http://spokanehomefuneral.com/uploads/1/3/0/5/130588960/zizixu.pdf
    • http://ofwinitiative.com/uploads/1/3/0/6/130604101/dezepipegewe-nusuwinezijagu-mumegiperup.pdf
    • http://moonlightairfoundation.org/uploads/1/3/0/5/130539992/4004794.pdf
    • http://juliablack.net/uploads/1/3/0/5/130589158/pewapab.pdf
    • https://gixaxilebo.weebly.com/uploads/1/3/0/2/130274241/daler_kejamadelixafu_mapepitifu.pdf
    • http://miguel-castro.com/uploads/1/3/0/2/130289485/474d4b52aa.pdf
    • http://b4bigschool.com/uploads/1/3/0/6/130621223/xelaninubeb.pdf
    • http://rumble-records.com/uploads/1/3/0/2/130270833/987bfb6a.pdf
    • https://nebirowupiwowis.weebly.com/uploads/1/3/0/5/130588856/vubar_muzodofap_towobive.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/2/130289496/130289496.html#organelos+celulares+histologia+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001404.bin
529ea85c7e4960ef16925be68198b43f5b038a15257afe3882b4d00be8bf7a2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1404 9444 bytes

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