Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d046e2120018bb…

MALICIOUS

PDF

42.7 KB Authoring application: LibreOffice
MD5: a2f1191ff32e83ce3216258013483e3f SHA-1: 81cc31b94161564f404ca9ba0234dedcd5360981 SHA-256: 95d046e2120018bba009713c6f1a85cd573710e03f092f4a652ea9e6dd4e726b
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing attempt. The document body contains a large number of embedded URLs pointing to external PDF files hosted on various domains, indicating a link farm designed to distribute malicious content or redirect users to phishing sites. The primary attack pattern involves leveraging these links for traffic redirection.

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://oakhillcontractorsllc.net/uploads/1/3/0/3/130323290/bunamolorupov.pdf
    • http://branduconsulting.com/uploads/1/3/0/7/130776099/8811123.pdf
    • http://securevisionmediasolutions.com/uploads/1/3/0/6/130603930/sidivawitepazuwato.pdf
    • http://airinbudiman.com/uploads/1/3/0/5/130550667/valeputaboj.pdf
    • http://brokenhartarena.org/uploads/1/3/0/2/130288571/rukutegawif-sajafudagi.pdf
    • http://zuzubeanpress.com/uploads/1/3/0/6/130639397/momivudugu_nefekamo.pdf
    • http://revirg.com/uploads/1/3/0/6/130620852/mesekaja.pdf
    • http://minnesotakindnessproject.org/uploads/1/3/0/6/130604427/9e7dd2fbc44e02b.pdf
    • http://mlsweettreats.com/uploads/1/3/0/6/130622047/1873567.pdf
    • http://toponsitewellness.com/uploads/1/3/0/2/130272381/1716949.pdf
    • http://vaxmicuenta.com/uploads/1/3/0/6/130620159/7761850.pdf
    • http://4therestofus.com/uploads/1/3/0/6/130603771/xoxareneroxulimev.pdf
    • http://allamericandogexpo.com/uploads/1/3/0/6/130605255/130605255.html#artikel+bakteri+acetobacter+xylinum

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001310.bin
a3da3f7a0f4124a267ea0f44db6b54fd096c45447b5ee5b05edcde4e24b5eff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1310 8284 bytes
font_01_sfnt_off0000605c.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605C 16036 bytes

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