Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e373631958c8715…

MALICIOUS

PDF

39.7 KB Authoring application: Nitro PDF
MD5: e13f8900517a4b03657f812b4c21362a SHA-1: b2fd82ddc1f4bc4df920e73d7dbacdf708a6caaa SHA-256: 8e373631958c8715126f87456836a8dde1527be1919c4dabc0a0077841e22f09
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are structured to appear as SEO-friendly links to other PDFs. The document body text, though partially corrupted, mentions 'Travel itinerary template word 2018' and includes multiple URLs that likely lead to malicious PDF downloads. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and malicious PDF delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://moscowshamrocks.com/uploads/1/3/0/3/130379431/mujigogagefexejugem.pdf
    • http://vtflowergardener.com/uploads/1/3/0/6/130605044/vefapi.pdf
    • http://styer-fitzgerald.net/uploads/1/3/0/5/130590582/5f66586.pdf
    • http://naturesowncharcoal.com/uploads/1/3/0/3/130323266/wegos.pdf
    • http://rissmusicschool.com/uploads/1/3/0/6/130605267/068771d.pdf
    • http://awlesq.com/uploads/1/3/0/6/130604269/5359589.pdf
    • http://nylarose.co/uploads/1/3/0/3/130313284/31975e9ede88c.pdf
    • http://r-ewolucje.com/uploads/1/3/0/6/130604022/130604022.html#travel+itinerary+template+word+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010ec.bin
564da6e97e51ad70a64dea6188d75c08a39d7851173e76ffabfdad2da81ea682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC 8040 bytes

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