Malicious PDF — malware analysis report

Static analysis result for SHA-256 340bb220804f953f…

MALICIOUS

PDF

34.6 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: 0138af9c310e695684d873c641fbc9c9 SHA-1: 4c83e4a0f86ae790bf2082f6074737c7018a3e84 SHA-256: 340bb220804f953fa53fcfd19ba9b0c4383ff0a1f945b27c305d7649bf41f12d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a mechanism for redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://erinmcwhorter.org/uploads/1/3/0/6/130605497/3de3b4cc95.pdf In PDF document text
    • http://rejuvenatemedical.co.uk/uploads/1/3/0/4/130483625/298c33.pdfIn PDF document text
    • http://570dj.com/uploads/1/3/0/4/130478551/4658e19e.pdfIn PDF document text
    • http://cpanel.fundep.org/uploads/1/3/0/5/130539517/6590071.pdfIn PDF document text
    • http://lucylashstudio.com/uploads/1/3/0/4/130483479/gexuvijexese.pdfIn PDF document text
    • http://consercoinc.com/uploads/1/3/0/8/130873922/5741823.pdfIn PDF document text
    • http://chris-reimagine.com/uploads/1/3/0/2/130272573/dddd7294.pdfIn PDF document text
    • http://catswearitsat.com/uploads/1/3/0/2/130270893/9926632.pdfIn PDF document text
    • http://comonativo.com/uploads/1/3/0/4/130488584/gokewifesagiremebojo.pdfIn PDF document text
    • http://thelunakit.com/uploads/1/3/0/6/130640191/4c00247.pdfIn PDF document text
    • http://jvwritingv4.club/uploads/1/3/0/6/130620393/9650420.pdfIn PDF document text
    • http://gocustomstamps.com/uploads/1/3/0/5/130588614/5145353.pdfIn PDF document text
    • http://letmejustwrite.com/uploads/1/3/0/5/130540789/jejusoxab.pdfIn PDF document text
    • http://we-connectthedots.net/uploads/1/3/0/5/130546333/9a3b27c2625f28.pdfIn PDF document text
    • http://gigiwatson.com/uploads/1/3/0/5/130547275/kedugixunurari-nivufaririrodek.pdfIn PDF document text
    • http://www.littleredcravatfoods.com/uploads/1/3/0/9/130969465/wesavuxasajikir.pdfIn PDF document text
    • http://idents.net/uploads/1/3/0/7/130776075/9826837.pdfIn PDF document text
    • http://freeyourmindnow.org/uploads/1/3/0/6/130621109/pajef.pdfIn PDF document text
    • http://risingskyweddings.com/uploads/1/3/0/5/130541211/suzukewoma.pdfIn PDF document text
    • http://ugjw.brdge.org/uploads/1/3/0/4/130488114/130488114.html#iupac+rules+for+naming+aldehydesIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B27 7128 bytes
SHA-256: e7db344ffc70f30ecf25acb920081e87395b2f6cca5936d3a878758da757aeeb

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