Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a3c2e7ca685ecc…

MALICIOUS

PDF

35.4 KB Authoring application: Mobipocket Creator
MD5: 28016823e6b133fdf9f8644576ccc151 SHA-1: 50469d4c0feb38e069f96a6c1fff2926c336daf4 SHA-256: 00a3c2e7ca685eccc2b0484bb4022f20e70df164f5b62d02b66ef9332a01ab31
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. This technique is often used to manipulate search engine rankings or to distribute malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution through these links.

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://kelseyhopebrewer.com/uploads/1/3/0/6/130621432/a38b1055.pdf
    • http://redbaronlimo.com/uploads/1/3/0/7/130775025/gilexi.pdf
    • http://eacenter.org/uploads/1/3/0/4/130483542/deforevuzewix_jirabadibariw_tidan.pdf
    • http://www.op-gull.no/uploads/1/3/0/5/130550855/jonixipejijal-zokomekaruv-rebeju-fopak.pdf
    • http://www.kingsbrownies.com/uploads/1/3/0/9/130969511/1589388.pdf
    • http://trinityfitness247.com/uploads/1/3/0/4/130489830/7875491.pdf
    • http://nwm8.club/uploads/1/3/0/4/130436354/13fbf119.pdf
    • http://smallsharesclub.com/uploads/1/3/0/5/130551330/2013878.pdf
    • http://oxbowsandmeanders.com/uploads/1/3/0/2/130289410/8877069.pdf
    • http://caopharmacueticals.com/uploads/1/3/0/5/130547515/3774d2.pdf
    • http://chrislloydmusic.com/uploads/1/3/0/2/130291350/favomezagigi-ribanexuw-tugakamupef.pdf
    • http://lakelandhousesearch.com/uploads/1/3/0/6/130620949/396881.pdf
    • http://adsl-63-204-18-28.benefitplans.org/uploads/1/3/0/5/130545985/130545985.html#3rd+cranial+nerve+course+mri

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032d3.bin
5ffb93285efd8e5e5576b200f07c43e66a9c0f75ecdb0c268f8c7afcf4420f86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32D3 7828 bytes

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