Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e6fa8186cf96f5…

MALICIOUS

PDF

35.0 KB Authoring application: OpenOffice.org
MD5: ab516a8b7c7be13a4f4b4afd6a934423 SHA-1: 4b1ac2a2040810f4aec2d21dbfff33fed4d5212b SHA-256: d8e6fa8186cf96f5064e32a12ebaf0544d10a87d8952d189f1d9eb02470414b3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many with numeric slugs, indicating a link farm designed to drive traffic to potentially malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious intent. The document body, though heavily corrupted, contains references to recipes and kitchen appliances, likely serving as a lure to disguise the malicious nature of the embedded links.

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://www.schadhomestead.com/uploads/1/3/0/9/130969456/fozugopux.pdf
    • http://rasterinterrupt.net/uploads/1/3/0/6/130604549/dac510bc22.pdf
    • http://www.rebeccabevans.com/uploads/1/3/0/6/130605122/799889.pdf
    • http://millenniumobile.com/uploads/1/3/0/5/130550887/3842299.pdf
    • http://www.hsc360.com/uploads/1/3/0/2/130270867/e461d6da9cfbd.pdf
    • http://checkthem.in/uploads/1/3/0/6/130605216/memuva.pdf
    • http://kentdlc.com/uploads/1/3/0/6/130620313/jebupaxase.pdf
    • http://branchettastreasures.com/uploads/1/3/0/7/130740001/fadebi-kufojegotideba-tatigufuxogu-lolelefixe.pdf
    • http://quiltwithleslie.com/uploads/1/3/0/5/130551059/8274045.pdf
    • http://propellersound.ca/uploads/1/3/0/6/130604467/a688a637f48a134.pdf
    • http://bespokebadges.co.uk/uploads/1/3/0/4/130493037/bodugip-rasobuz-vewej.pdf
    • http://www.dubbelt.net/uploads/1/3/0/7/130739154/130739154.html#farberware+air+fryer+toaster+oven+chicken+recipes
    • http://checkthem.in/uploads/1/3/0/6/130605216/memuva

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cd.bin
52ddb8b3efce5d041055f31921ce0ba01ae1787c8bab728181edaf0eba4b6e05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30CD 8508 bytes

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