Malicious PDF — malware analysis report

Static analysis result for SHA-256 45def1a3e5296da1…

MALICIOUS

PDF

49.0 KB Authoring application: GIMP
MD5: af7e50745255b32eab076c8572010538 SHA-1: a2558cef5ca151e941bf3a771bc89abbfaae1169 SHA-256: 45def1a3e5296da1e4ed3e462f3ce952925340a6a798610212ddfdc35d5b4e80
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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://traxtr.com/uploads/1/3/0/3/130379912/ace182.pdf
    • http://cadescovejunkies.com/uploads/1/3/0/4/130476053/614328b4ec21.pdf
    • http://thebelieversoutlet.com/uploads/1/3/0/2/130274349/dunefoso.pdf
    • http://jamesmcleodvo.com/uploads/1/3/0/5/130545537/figasuxa.pdf
    • http://mrsmeltabargersclass.com/uploads/1/3/0/5/130543107/73ba80c1.pdf
    • http://cadenceresource.com/uploads/1/3/0/6/130640107/pepadu.pdf
    • http://energiasenal.com/uploads/1/3/0/4/130475980/7960275.pdf
    • http://skydivingonsaturn.com/uploads/1/3/0/6/130604557/df635c44.pdf
    • http://bgflowermart.com/uploads/1/3/0/7/130740231/395c2.pdf
    • http://lapsonsplace.com/uploads/1/3/0/6/130639465/mebifasunoxi.pdf
    • http://spiritchile.net/uploads/1/3/0/3/130313158/nerasome-satogirum-pipidakasa-jawugonanu.pdf
    • http://nolachrysler.com/uploads/1/3/0/5/130589316/febazetujapesuxebaf.pdf
    • http://plumbingsantaclarita.net/uploads/1/3/0/5/130551132/2b1e418bcc4.pdf
    • http://4ufurnituredesign.com/uploads/1/3/0/2/130291769/48f346133232d.pdf
    • http://restorativesolutions.nz/uploads/1/3/0/7/130739791/losijojesit.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/7/130739560/130739560.html#tratamiento+fisioterapeutico+de+evc+isquemico
    • http://spiritchile.net/uploads/1/3/0/3/130313158/nerasome-satogirum-pipidakasa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006242.bin
4e9b13ae2fa07c65851fb97b9b09185800ace36aafa1406ac03c9697b9b3f42c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6242 9764 bytes

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