Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dcefb12ce1b6646…

MALICIOUS

PDF

40.5 KB Authoring application: OpenOffice.org
MD5: 43b970bac22842c2ebbe968927188a8e SHA-1: 8e2c1808747bb211a76ea0032e820bde29c3dfff SHA-256: 0dcefb12ce1b664697ba6e75993203df86d85d0fdd9edd6ded0ce47db7e6d01d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical finding for a large number of external PDF links, suggesting a link farm or payload hosting. The ML classifier and ClamAV also identified it as malicious. The embedded URLs likely serve as lures or download locations for further malicious content.

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://ship504.com/uploads/1/3/0/4/130483303/lakugomekem.pdf
    • http://adaircctv.com/uploads/1/3/0/3/130313190/zalitabozoriwasiw.pdf
    • http://sunsetridgeatlanesend.ca/uploads/1/3/0/5/130542908/bcc9b6.pdf
    • https://vaxatixewefu.weebly.com/uploads/1/3/0/2/130287727/556ce59.pdf
    • http://mkh-mfg.com/uploads/1/3/0/5/130551198/wixumudimujemo.pdf
    • http://mrpodmers.com/uploads/1/3/0/5/130589250/xemodipat-laluwanisuzu-netepiw-liwolomajujeku.pdf
    • http://northmiresouces.org/uploads/1/3/0/4/130488530/5485836.pdf
    • http://audio-start41.icu/uploads/2020/01/28/4000127.pdf
    • http://improperetta.net/uploads/1/3/0/4/130435955/tevujitebupata.pdf
    • http://advance-it.net/uploads/1/3/0/4/130478868/130478868.html#sample+disciplinary+inquiry+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000137c.bin
9c0f7c66080c22399b018b32e12de647c5d72051ccbac89393832366105a2d2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137C 7592 bytes

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