Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc7c93798d18c6b…

MALICIOUS

PDF

38.8 KB Authoring application: LibreOffice
MD5: 50bf542684b7334e14412c69ceff5221 SHA-1: a2437130239f1affc3cd6fe4e7c3e423bfa85905 SHA-256: 9fc7c93798d18c6b30f3c71c39c11d42f2f19eb9d58ca3c1d6b89e10174539ce
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.003 Phishing: Spearphishing Attachment T1204.001 User Execution: Malicious Link

The sample is a small PDF containing a high volume of external links, triggering the PDF_SEO_LINK_FARM heuristic. The document body contains fragmented text and a list of URLs, which is characteristic of SEO poisoning campaigns designed to manipulate search engine rankings and drive traffic to malicious sites. ClamAV detection as Pdf.Phishing.TtraffRobotInstall further supports the phishing nature of this file.

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://www.ourstorybarn.com/uploads/1/3/0/8/130814900/mulerosoja-monawo-puwuzogipaz.pdf
    • http://firstretrospective.com/uploads/1/3/0/4/130435516/2951975.pdf
    • http://autohelpinc.com/uploads/1/3/0/5/130551339/af4a20843.pdf
    • http://njetd.com/uploads/1/3/0/5/130590243/sufebun.pdf
    • http://bamaagents.com/uploads/1/3/0/7/130776113/dovutorenatik.pdf
    • http://nycmedicalmarijuana.com/uploads/1/3/0/7/130776113/632a57.pdf
    • http://a1hourservice.com/uploads/1/3/0/2/130287428/208651.pdf
    • http://pawbehaviour.com/uploads/1/3/0/8/130814078/7e4fb0.pdf
    • http://tcgplanet.com/uploads/1/3/0/4/130435813/pepemozujafi_kudupunoko_kilex.pdf
    • http://whatchangedmylife.com/uploads/1/3/0/4/130435748/makevumilafofep.pdf
    • http://adtest.site/uploads/1/3/0/4/130435654/6255863.pdf
    • http://www.aveniragency.com/uploads/1/3/0/2/130288893/824e4d2f1.pdf
    • http://www.qulturecollective.com/uploads/1/3/0/5/130540788/f1744c24d4.pdf
    • http://viceroyautotrans.com/uploads/1/3/0/6/130620321/xozevarimowopexefe.pdf
    • http://amandacake.com/uploads/1/3/0/7/130775485/fatura-luzabut.pdf
    • http://michelgaymard.com/uploads/1/3/0/4/130435641/843794.pdf
    • http://www.sadiereynoldsceramicdesigns.com/uploads/1/3/0/9/130969162/6117163.pdf
    • http://thetablemeeting.com/uploads/1/3/0/4/130476039/kikugar_mirepofi_xedupidolitivor_bidejipariwusa.pdf
    • http://quinnarcher.com/uploads/1/3/0/6/130621805/1156345.pdf
    • http://www.missholleyskitchen.com/uploads/1/3/0/4/130488993/8397750.pdf
    • http://jimmyplease.com/uploads/1/3/0/2/130291438/lexejegaluratuzazuta.pdf
    • http://mannclass.com/uploads/1/3/0/2/130272232/limojafumez-vupufewokopiwil-biwogeduk.pdf
    • http://ricardocariaga.com/uploads/1/3/0/6/130604025/podupe.pdf
    • http://prypost.com/uploads/1/3/0/7/130776007/nuveluziloduw.pdf
    • http://mtj7z.bpmtc.com/uploads/1/3/0/8/130874595/130874595.html#benecard+medication+prior+auth+form
    • http://ricardocariaga.com/uploads/1/3/0/6/13060402

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000336d.bin
0108d2af7ee3cf178e60e89c0ebf53bc72d6371a9b3168ae8d79f5ea9f275c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x336D 8180 bytes

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