Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a8eccf4c951e96…

MALICIOUS

PDF

42.1 KB Authoring application: PDFBox
MD5: 3c67adc42ffd0dde142642082657e31b SHA-1: df0cdf6c816af587cc006c93ead1b26e8f2b1bd0 SHA-256: 38a8eccf4c951e962759d91b0b2e2569e66803055752baf7968cbe98439310bf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV heuristic also flags this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The document body itself is heavily obfuscated and does not provide clear user-facing text, but the overall structure and heuristic firings strongly suggest a malicious intent to redirect users to external resources.

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://mta-sts.mx.wjalarm.com/uploads/1/3/0/5/130539414/1310313.pdf
    • http://myvrcpp.com/uploads/1/3/0/7/130739028/031211.pdf
    • http://www.rightofwaysolutionsllc.com/uploads/1/3/0/4/130489241/2859778.pdf
    • http://wildheartgypsysoulboutique.com/uploads/1/3/0/6/130604391/sotuv.pdf
    • http://mirasbigday.com/uploads/1/3/0/2/130288510/tuvetupiwimoj.pdf
    • http://southwestminnesotastringfestival.com/uploads/1/3/0/5/130588287/0fe8fc8.pdf
    • http://africanretreats.com/uploads/1/3/0/7/130740612/ae88d.pdf
    • http://www.uotservices.com/uploads/1/3/0/5/130544131/faxuzojeroxi.pdf
    • http://www.ballaratasa.org.au/uploads/1/3/0/4/130475996/kebiriral-tejik-lesiwaze-sebaxofilak.pdf
    • http://ja-sauer.family/uploads/1/3/0/5/130588876/33dbbd76665b4f.pdf
    • http://darkmediaguy.com/uploads/1/3/0/4/130476447/3041092.pdf
    • http://mevsimyalitim.com/uploads/1/3/0/6/130603731/gemig.pdf
    • http://lesliepearcewritescopy.com/uploads/1/3/0/6/130620579/c38ddc7d11.pdf
    • http://robynsraja.com/uploads/1/3/0/4/130492771/8132927.pdf
    • http://sta-66-99-58-193.ladse.org/uploads/1/3/0/6/130621524/130621524.html#operator+precedence+parsing+in+compiler+design+notes

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003349.bin
20ba3d7fd727da999838c6cb8b51bb3b22dcad79ef2d42f120a8adbeeb97fc8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3349 16148 bytes
font_01_sfnt_off00004acd.bin
90211f7f26ef4fadedf07b06854b50c64316d375ec414aa4899deb3ccf03b5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ACD 7904 bytes

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