Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc36aa86af0c502c…

MALICIOUS

PDF

49.9 KB Authoring application: LibreOffice Draw
MD5: cabbe8d757ad533a73f94be7b39b5bc0 SHA-1: 1a49eecdfdfe5bce38039726efbe3b9a725f5b55 SHA-256: fc36aa86af0c502c3f35ae6e5cd2e30295dd177fdd64d8ad5c9ea275771222f1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, all of which appear to be part of a link farm designed to distribute PDF files. The ClamAV detection and ML classifier further support the malicious nature of this document, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

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://minibaraddict.com/uploads/1/3/0/5/130542872/1481953.pdf
    • http://mindfulengagment.com/uploads/1/3/0/4/130435524/8375829.pdf
    • http://coachinginyourcloset.com/uploads/1/3/0/6/130621000/wobedurakotarekizipi.pdf
    • http://bendavidsonministries.com/uploads/1/3/0/2/130289334/8414169.pdf
    • http://dewozupi.acupofh2o.net/uploads/2020/01/28/sididad_xotavutifeli.pdf
    • http://ajvincentproductions.com/uploads/1/3/0/2/130289227/1782695.pdf
    • http://renmach.com/uploads/1/3/0/3/130379132/130379132.html#makeup+salon+games+mod

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001111.bin
42e2c88aae6ee68f89dac734a5be903928222cfd1ab80b784ff14c5b72b99d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1111 8620 bytes
font_01_sfnt_off00006b11.bin
35d70aa3081ebf2d13925086691d41a9e564022f932132daa43c82970b4d6fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 17124 bytes
font_02_sfnt_off000082ff.bin
8790ca1b4d76964508d8623f84294322ffd997d4e5893daf1f19dacae356dd55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82FF 3884 bytes

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