Malicious PDF — malware analysis report

Static analysis result for SHA-256 a480f0f2abbfa00e…

MALICIOUS

PDF

40.6 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 832e348b9a471c3be533d34c361ea6e3 SHA-1: 1be8c6cdbc50af74521f8f19468ae8676519b28a SHA-256: a480f0f2abbfa00e339e77f09997eac8f579489b3fe0a40f0712e583ef5513af
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The embedded URLs and the heuristic strongly suggest the document's purpose is to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lisixum.clearcaptioner.tech/uploads/2020/01/28/taxilubewemoto.pdf In PDF document text
    • http://fix.buket99.com/uploads/2020/01/29/xiwiw_wufenu_kegobo.pdfIn PDF document text
    • http://paddleboardz.com/uploads/1/3/0/5/130588681/xewiwe.pdfIn PDF document text
    • http://michaelshusko.com/uploads/1/3/0/4/130476045/130476045.html#aerosmith+dream+on+memeIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000100d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D 8788 bytes
SHA-256: 6a269499bf32c58fed159c76ce3482019f1294e2ccbedcc2487492cc21125823
font_01_sfnt_off00004e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E42 16228 bytes
SHA-256: 378288d3133907284a1dd708aec606fa45674349f7e67e9eaedc79a8f6af9139
font_02_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 2732 bytes
SHA-256: 50224c6c483bfa86a10f62efd7baa2c756f8036c0a911ebd537387e21b2fb6f3

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