Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e13a7aece0373d…

MALICIOUS

PDF

44.1 KB Authoring application: pdf-parser
MD5: c3eb02a855767c3954c0e00a3036a11b SHA-1: 7dd585c8b350f66bdbba20cd25bc30f8266dea6d SHA-256: 28e13a7aece0373db67335d8b814211aaa09f7a4c256c767903fc19648ac3a5c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs are likely used to redirect users to malicious content or download further stages of an attack.

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://mybulletproofart.com/uploads/1/3/0/7/130739126/ae7f5b.pdf
    • http://columbiarockacademy.com/uploads/1/3/0/5/130545573/eb417.pdf
    • http://lightonwatertcm.com/uploads/1/3/0/6/130605161/772d34df66f.pdf
    • http://seometrics.org/uploads/1/3/0/6/130620416/7337998.pdf
    • http://nzacres2019.nz/uploads/1/3/0/7/130738710/4cfb9ce3a0978.pdf
    • http://safermountains.com/uploads/1/3/0/7/130775047/beduwilelepoliduj.pdf
    • http://balloonmoon.com.au/uploads/1/3/0/2/130274263/mulufa-mekokotodoj-geregivos-basaratuj.pdf
    • http://hillslider.com/uploads/1/3/0/6/130639554/d7918a63cf8e.pdf
    • http://nationwidepropertyinvestments.com/uploads/1/3/0/3/130323229/xadapofo.pdf
    • http://ctsf.us/uploads/1/3/0/6/130639350/1a589696.pdf
    • http://snowbirdhomemanagementservices.net/uploads/1/3/0/7/130740060/18aef66bb.pdf
    • http://nekomimilisa.net/uploads/1/3/0/2/130287302/8d6ae7c6c1372.pdf
    • http://allseriescloud.com/uploads/1/3/0/7/130775641/lujafubax.pdf
    • http://www.anchorstoragelc.com/uploads/1/3/0/5/130539227/4434870.pdf
    • http://artisanesmeralda-spanish.devsite-1.com/uploads/1/3/0/7/130738971/130738971.html#revise+sociology+functionalism+education

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051f2.bin
e13c6106212c6717ee49f879fd23ba17c4b2fd392a45275e73864c9747b27189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F2 8488 bytes

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