Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca019dcb5163600…

MALICIOUS

PDF

36.0 KB Authoring application: PDFBox
MD5: 4c531e556e305416159d5507bf27847c SHA-1: 235098ec1abd7c33fd8dda127fe3c3594f1ff01c SHA-256: fca019dcb5163600de5d54f7e93ff567e9c094b7794a7c77fb85c0433b432205
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used in phishing campaigns to redirect users to malicious websites. The ClamAV detection and the PDF_SEO_LINK_FARM heuristic confirm the malicious nature of these links. The document body itself is heavily obfuscated and contains a mix of text and URLs, further supporting the phishing pretext.

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://myphonexpress.com/uploads/1/3/0/6/130639933/likonutidonemufez.pdf
    • http://missionbeachcaravanpark.com/uploads/1/3/0/6/130604102/9681829.pdf
    • http://refreshtoimpress.com/uploads/1/3/0/5/130589099/lafikizunotixur-dalitakiwiz-boduke-betuluzelesip.pdf
    • http://nwinternationalhealth.net/uploads/1/3/0/2/130289272/d7d8d32e9d708b.pdf
    • http://ohanarestocafe.com/uploads/1/3/0/6/130620416/3942634.pdf
    • http://smimarketingservices.com/uploads/1/3/0/4/130476505/a9baecde05c43b.pdf
    • http://alexabuffini.com/uploads/1/3/0/5/130590770/lodopanofev_rogovapesemalen.pdf
    • http://mid-americathermalimaging.com/uploads/1/3/0/6/130621307/zubejemedel.pdf
    • http://mikeintucson.com/uploads/1/3/0/7/130775907/130775907.html#dictionary+english+swedish+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000123f.bin
5ce84fa5bd0d18d42ffab4d2735c40fae58da1ba0eec018b6563f9cf48034fac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123F 9204 bytes

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