Malicious PDF — malware analysis report

Static analysis result for SHA-256 247ee10d7d838eb8…

MALICIOUS

PDF

31.6 KB Authoring application: OpenOffice.org
MD5: 14455bac608d83ceddc820054874e21f SHA-1: b63b2df6ccbcdc3c3c461ed62ffa9d9f4924778f SHA-256: 247ee10d7d838eb86edb8204772de097fd4a86140070d90bdb62bee723048ebe
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external 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. The ML classifier also strongly flagged this file as malicious. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://oildale.news/uploads/1/3/0/6/130640029/manetupageposoz_raxos.pdf
    • http://www.mathseducators.co.uk/uploads/1/3/0/4/130492441/jevadinezaju-xesobivirolobu-jabufugug.pdf
    • http://meredithbledsoephd.com/uploads/1/3/0/2/130272906/pefoneruv-surazel-wufugigezug-bapezid.pdf
    • http://soynwicks.com/uploads/1/3/0/3/130323601/3372924.pdf
    • http://joyceolsonessentials.com/uploads/1/3/0/5/130547450/6142171.pdf
    • http://ampmycoins.com/uploads/1/3/0/7/130740330/gokizeromise.pdf
    • http://psicoterapeutavilassar.com/uploads/1/3/0/2/130288379/favos.pdf
    • http://jimbits.net/uploads/1/3/0/3/130324289/5f55bc120b90.pdf
    • http://sanddollarsurfcompany.com/uploads/1/3/0/6/130640057/4d8c2640baa156d.pdf
    • http://newproxies.com/uploads/1/3/0/4/130476440/5e7348b746fc.pdf
    • http://gbnewsroom.com/uploads/1/3/0/7/130776017/zufajukitas_jaraw_gusasizefanem_muruv.pdf
    • http://stratgeorgeadis.com/uploads/1/3/0/3/130323249/bb160dba1.pdf
    • http://itero3dlab.com/uploads/1/3/0/6/130639192/58f8415af608.pdf
    • http://mta-sts.mail.aradsecurityservices.com/uploads/1/3/0/6/130621357/6607984.pdf
    • http://bainversion.com/uploads/1/3/0/5/130551248/vefelized.pdf
    • http://genuinefenderparts.com/uploads/1/3/0/5/130540592/1800fc28e2575.pdf
    • http://firezoneschaumburg.com/uploads/1/3/0/5/130539016/zubiduz-tukivurut.pdf
    • http://loskuatro20decalifornia.com/uploads/1/3/0/4/130483552/130483552.html#esge+guidelines+upper+gi+bleeding
    • https://doi.org/10.1136/bm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001fb1.bin
3db096539fcf8da47abcd798da432f50a4ba25bded7be9ae6ae9390b3122f316		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FB1 7408 bytes

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