Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f0d856116bfd1c…

MALICIOUS

PDF

64.1 KB Authoring application: SWFTools
MD5: f529d25750966227e9b639c381242efd SHA-1: ebc2d879337fca4165e635ecc854f5cf53333099 SHA-256: f9f0d856116bfd1cf5b3fb6e0e5b62a8fac1216ed862cbd5c6687d1ac99d6955
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or SEO manipulation campaign. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://midicicastlerock.com/uploads/1/3/0/7/130738887/8193202.pdf
    • http://sa-machine-learning.org/uploads/1/3/0/2/130289474/leluponedazabuzusa.pdf
    • http://itslavishbitch.com/uploads/1/3/0/5/130547215/jenobenizejener_joduxibakaxux_nunojuzogaganiz.pdf
    • http://www.cannononlinemarketing.com/uploads/1/3/0/5/130539107/cc6d40a6.pdf
    • http://thecreativetrap.net/uploads/1/3/0/6/130639170/fepabefewofep.pdf
    • http://sys-service.it/uploads/1/3/0/4/130483239/2210319.pdf
    • http://soloforsenate.com/uploads/1/3/0/7/130775748/guvutu_texosa_xamobunowu_panedaluluz.pdf
    • http://www.behavinglively.org/uploads/1/3/0/5/130551957/soloxosuba-lisonejudiwuro.pdf
    • http://www.lukketselskap.no/uploads/1/3/0/2/130273625/16457ddb6ef5c7a.pdf
    • http://simonheptinstall.com/uploads/1/3/0/7/130776726/1d2015f65d1.pdf
    • http://leopardacquisition.com/uploads/1/3/0/3/130323130/130323130.html#second+order+partial+differential+equation+application

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007817.bin
cc98f97508262162c19014039f882b9bf72a0a1501be1257dac5bcdd66f30365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7817 5236 bytes
font_01_sfnt_off0000882b.bin
314795eaba312fc85d1452edf0309fa39d66d0b5b5aa8764fefbe0305ea70976		 pdf-font-stream PDF embedded font (sfnt) at offset 0x882B 16316 bytes
font_02_sfnt_off0000a173.bin
8d386e0fc0e18017ca0fd5f103d3dcc649317d41c5866631cbd5f4ae66a65258		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA173 9888 bytes

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