Malicious PDF — malware analysis report

Static analysis result for SHA-256 f690be7200d5c38a…

MALICIOUS

PDF

33.4 KB Authoring application: Pdftk
MD5: dc7c46438ece1be3cc3627d8bef60525 SHA-1: 7a9981471940a261a0e9020532b59098a4d40e7b SHA-256: f690be7200d5c38a36631e881129f95c144f37d51e107e22d5e1bfde505bce2d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection strategy. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs are likely used to direct users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://hippiegypsylife.com/uploads/1/3/0/6/130621620/1171885.pdf
    • http://theswcc.org/uploads/1/3/0/4/130476908/8271218.pdf
    • http://root.diamondcb.com/uploads/1/3/0/7/130740547/e98ff0.pdf
    • http://ccocciboutique.com/uploads/1/3/0/7/130775776/d0912e934bc3434.pdf
    • http://elbied.com/uploads/1/3/0/3/130379237/3459333.pdf
    • http://gomriz.com/uploads/1/3/0/7/130775294/junupudejimikotenaro.pdf
    • http://spanglisheducation.com/uploads/1/3/0/4/130476462/2324987.pdf
    • http://sessionninephotography.com/uploads/1/3/0/7/130738567/3b75756997.pdf
    • http://remarkhmc.com/uploads/1/3/0/4/130488696/jekurubavepe-pukiputejo-darobanumer-zibaj.pdf
    • http://mybowerstudio.com/uploads/1/3/0/6/130620986/3978129.pdf
    • http://myanalogworld.com/uploads/1/3/0/2/130289736/5794222.pdf
    • http://www.devonportcommunityhouse.co.nz/uploads/1/3/0/3/130323160/130323160.html#aashto+roadway+lighting+design+guide+%28oct+2005%29

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c61.bin
181ed506cafde1d1e7d42ef472fa979ec7527f2f6aa8b79586ed626fbeeece67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C61 7636 bytes

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