Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ff14ddde242981…

MALICIOUS

PDF

37.3 KB Authoring application: LibreOffice
MD5: 85a6e6ec5e9e943cc2db6b46a424d313 SHA-1: 1780bd1b735403ea74e2dec868178243d3a9785b SHA-256: 69ff14ddde242981ddd44c02ed36114be79f990d58a90adbd24ebacc005783f2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The critical heuristic 'PDF_SEO_LINK_FARM' indicates the document contains a large number of external links to other PDF files, suggesting a tactic to distribute further malicious content or manipulate search engine results. The embedded URLs are likely part of this link farm.

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://psupostdoc.org/uploads/1/3/0/2/130289421/kobozodogozuzopovov.pdf
    • http://flbenthos.org/uploads/1/3/0/4/130488604/5b212c6ff561653.pdf
    • http://tape.trysiki.ru/uploads/2020/01/28/1246070.pdf
    • http://carsncoffeecafe.com/uploads/1/3/0/7/130776239/774141.pdf
    • http://plumasarts.com/uploads/1/3/0/5/130590666/sazijoxubomu.pdf
    • http://netanawest.com/uploads/1/3/0/3/130379597/dozaginatarajax.pdf
    • https://munifufe.weebly.com/uploads/1/3/0/6/130604026/fokolinikez_zajibovukam_zemadorokuwudo.pdf
    • http://lluviaoutsourced.com/uploads/1/3/0/5/130589278/8927243.pdf
    • http://multifaithstorytelling.org/uploads/1/3/0/3/130379821/09d0b6943.pdf
    • http://mspokrantsband.ca/uploads/1/3/0/6/130604295/130604295.html#essay+explaining+why+you+deserve+a+scholarship

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001202.bin
b5c83479d15d51f553eb506c6f08a6a60ae746eef3226b37ae036521a28be880		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1202 7468 bytes

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