Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b28c78a7e77ba1e…

MALICIOUS

PDF

35.3 KB Authoring application: PDF Studio
MD5: 4b6e51e3d33f8c8fbe71985b40fad0e7 SHA-1: b0e9eb548c3d8c82942201b875551b41a08989f0 SHA-256: 0b28c78a7e77ba1ee259e651a4bfb8e5be840f73473d903c31919ca8f1301016
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://pineapplecoffeeandtea.com/uploads/1/3/0/5/130539940/3383990.pdf
    • http://www.multnomahelementary.org/uploads/1/3/0/9/130969899/xitefopofaxotakike.pdf
    • http://thediningroom745.com/uploads/1/3/0/7/130775103/bimufulamiwozoz.pdf
    • http://nursingresourcesaz.com/uploads/1/3/0/7/130738984/9981098.pdf
    • http://bethlehemhouse.org/uploads/1/3/0/5/130539652/doxufikekonawiniru.pdf
    • http://joyforusnow.com/uploads/1/3/0/2/130291800/9492785.pdf
    • http://officespace1999.com/uploads/1/3/0/7/130739811/3491154.pdf
    • http://miissb.com/uploads/1/3/0/5/130538902/zuselamitugekid.pdf
    • http://hostmaster.thimblecleaningservices.net/uploads/1/3/0/7/130739856/siwevujabijovedubo.pdf
    • http://tigerkrewe.com/uploads/1/3/0/6/130603808/64844.pdf
    • http://bradeaton.net/uploads/1/3/0/7/130775969/1058449.pdf
    • http://mailgate.greecepaint.com/uploads/1/3/0/3/130313237/2074964.pdf
    • http://iweargreatness.com/uploads/1/3/0/3/130379674/130379674.html#comparison+between+adaptive+immunity+and+innate+immunity

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032fa.bin
f940fce87283dbca2c5b56d920e1b251382d5b84fc07b64d5f82e5d9c42b863a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32FA 7624 bytes

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