Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f0b4b44e038b015…

MALICIOUS

PDF

43.7 KB Authoring application: SWFTools First seen: 2020-09-24
MD5: 9528e508503971539aec77e24b94f59c SHA-1: e43e77dee5a81417208055b6d158bd0af6a0ef0a SHA-256: 7f0b4b44e038b01534c593fc88b0bd53cee033cbdf715ac833957b8fbbaaf08f
152 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, many of which point to other PDF files. The document body text, while partially obfuscated, mentions 'Acknowledgement letter sample tagalog' and includes several URLs that appear to be part of a link farm. This suggests the document is designed to redirect users to malicious content, likely for SEO poisoning or phishing purposes. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://saveswenson.com/uploads/2020/01/27/80b998.pdf In PDF document text
    • http://tizuwabome.psgessoibbaatend.site/uploads/2020/01/28/5719912.pdfIn PDF document text
    • http://mobileonegaming.com/uploads/1/3/0/6/130604581/a1d77c78eb644.pdfIn PDF document text
    • http://wubikamama.videolur.pro/uploads/2020/01/29/rumavedidelufuv.pdfIn PDF document text
    • http://feldenkraisontour.com/uploads/1/3/0/6/130621511/lefefenil_kogejifa_xatepikogewuze_labunexixowu.pdfIn PDF document text
    • http://maxoteb.ceodentvicalvaro.com/uploads/2020/01/27/a6c82e3195.pdfIn PDF document text
    • http://drjamesworling.org/uploads/1/3/0/6/130604413/5538421.pdfIn PDF document text
    • http://the-birth-project.com/uploads/1/3/0/2/130289458/wikitujevoj.pdfIn PDF document text
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/2/130289580/130289580.html#acknowledgement+letter+sample+tagalogIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE 8244 bytes
SHA-256: a44cd14a7ea357c2a21ea409fbcfbcd83c901a9dccbc5855bb0d170215c08503

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