Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba3e9390e5d331c…

MALICIOUS

PDF

62.5 KB Authoring application: Soda PDF First seen: 2020-09-04
MD5: f0a03a75f2ef653048a2b50964b9e621 SHA-1: ca6b5c49399b7444d2ecc620ef8f70f914a8e3db SHA-256: cba3e9390e5d331c91be13376b872e9fdfcd053b53d5df85dc31c7034bebb5cd
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This technique is often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://canaiandchai.com/uploads/1/3/0/4/130491703/4072699.pdf In PDF document text
    • http://www.acufirstchoice.com/uploads/1/3/0/3/130323206/rebawusibip.pdfIn PDF document text
    • http://dgiindex.org/uploads/1/3/0/5/130550723/pilabexemona_julopijuxul_peguxapot_vefajiromodetav.pdfIn PDF document text
    • http://benjaminburnham.com/uploads/1/3/0/5/130589057/6422198.pdfIn PDF document text
    • http://mounthebronstem.com/uploads/1/3/0/5/130551434/barovofepovolaxemeb.pdfIn PDF document text
    • http://convergecamp.co.uk/uploads/1/3/0/4/130435876/e7d763ac3ab.pdfIn PDF document text
    • http://obhaw.net/uploads/1/3/0/6/130621401/2496096.pdfIn PDF document text
    • http://mx3.rampensau.training/uploads/1/3/0/3/130323997/7242416.pdfIn PDF document text
    • http://myapotheka.com/uploads/1/3/0/6/130620673/7401590.pdfIn PDF document text
    • http://babywhoopsie.com/uploads/1/3/0/5/130588675/14a34.pdfIn PDF document text
    • http://www.ghostly-art.com/uploads/1/3/0/7/130775396/ec6a69e18fd1237.pdfIn PDF document text
    • http://life-simplified.org/uploads/1/3/0/4/130435998/8540690.pdfIn PDF document text
    • http://www.altoedc.com/uploads/1/3/0/7/130738572/130738572.html#what+is+rheumatic+fever+and+rheumatic+heart+diseaseIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1380 9516 bytes
SHA-256: cbc1fe886a7d96ae656d6e096fdfd2c3d72a27f15daf3adee5a25e4741f1dcca
font_01_sfnt_off0000b946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB946 3156 bytes
SHA-256: 4e9ae17c41f053e7ad2cff4c16f4465db96732130fdde230725ded2fe80853ad