Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf556caa3793dac6…

MALICIOUS

PDF

40.2 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: d3d23a7faaa382c052b1e7fb728d50c8 SHA-1: c603a5177d13f1535bf16db8f343a3a090cb604a SHA-256: bf556caa3793dac66a6e7e2f54de9e3f9a19408c47c6c7d21b1248350741f975
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous URLs pointing to other PDF files, suggesting a tactic to redirect users to malicious content or download further payloads. The presence of a visual download button lure reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://naturalpipes.com/uploads/1/3/0/4/130483940/aeede0dc29626.pdf In PDF document text
    • http://prettylittlewaistline.com/uploads/1/3/0/3/130323567/2290019.pdfIn PDF document text
    • http://sumogorak.irbispartner.ru/uploads/2020/01/28/xamodubobuw.pdfIn PDF document text
    • http://blessedinbali.com/uploads/1/3/0/6/130639553/bb1740e80.pdfIn PDF document text
    • http://omnicamlab.com/uploads/1/3/0/7/130775556/wovewubogolesufe.pdfIn PDF document text
    • http://mindmapfraktl.com/uploads/1/3/0/2/130270753/zokazu-vezivufemajis.pdfIn PDF document text
    • http://andersoncapsim.com/uploads/1/3/0/5/130588442/2179f39a.pdfIn PDF document text
    • http://tautsaimnieks.online/uploads/1/3/0/2/130287246/8915713.pdfIn PDF document text
    • http://taggroup.nz/uploads/1/3/0/6/130639865/fejitinawuvadu.pdfIn PDF document text
    • http://ackoeltechniek.nl/uploads/1/3/0/5/130551576/0c89d66286e651.pdfIn PDF document text
    • http://kellyhunt.net/uploads/1/3/0/7/130739049/juwulemobewipejajusu.pdfIn PDF document text
    • http://cmma2017.info/uploads/1/3/0/5/130539244/5136740.pdfIn PDF document text
    • http://ndtasanantonio.org/uploads/1/3/0/5/130588213/130588213.html#java++jre1.+8.+0_191In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1325 8944 bytes
SHA-256: 1f010b88bd235e1856667ac0ccad8794231d833ad1070c3eea96a56da7db0dff