Malicious PDF — malware analysis report

Static analysis result for SHA-256 1545617032782752…

MALICIOUS

PDF

43.2 KB Authoring application: PDFedit First seen: 2020-09-15
MD5: 16e77a150bd11386ddd981c0a69ee49c SHA-1: dac910d551f815c51572356b0b065c104294b289 SHA-256: 1545617032782752f6f6fbb413cd65634ad675344427f94988b420f95e1370fc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a distribution mechanism for further malicious content. ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports its malicious nature. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://glenviewhalloweenhustle.com/uploads/1/3/0/7/130776687/28df7eb.pdf In PDF document text
    • http://msfontes.com/uploads/1/3/0/6/130621132/3558450.pdfIn PDF document text
    • http://theapexbasketballtraining.com/uploads/1/3/0/8/130814248/runaruxin.pdfIn PDF document text
    • http://bangkokrepublik.co/uploads/1/3/0/6/130639895/bc28b8dcb29.pdfIn PDF document text
    • http://cloud-six.com/uploads/1/3/0/5/130589125/bowux.pdfIn PDF document text
    • http://colormeribbons.com/uploads/1/3/0/6/130639896/d3f796d.pdfIn PDF document text
    • http://belliesandbundle.com/uploads/1/3/0/3/130313107/2267141.pdfIn PDF document text
    • http://sourcesounding.com/uploads/1/3/0/6/130639879/rolisazim_kujekefod_zukutelit.pdfIn PDF document text
    • http://neighbors4christ.org/uploads/1/3/0/7/130739385/sodopumuwo_tanokapaxafini_xataviteru_nufobutenal.pdfIn PDF document text
    • http://siloambaptist-church.org/uploads/1/3/0/5/130589339/bodol-senunotajameza.pdfIn PDF document text
    • http://myitinerary.me/uploads/1/3/0/2/130287317/f6b01c.pdfIn PDF document text
    • http://clearsourcevoip.com/uploads/1/3/0/8/130813461/nunurudugokavof.pdfIn PDF document text
    • http://www.3e3.co.uk/uploads/1/3/0/7/130775740/130775740.html#deontology+theory+ethics+definitionIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39F9 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d
font_01_sfnt_off000051d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51D7 7724 bytes
SHA-256: 85114d15bc1c4e57a651aa44b3f84a108f301f960c2350cc50cdf5d6e2a5af66

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