Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7db16ea248bf90b…

MALICIOUS

PDF

36.0 KB Authoring application: Karbon
MD5: 9e1219839fcff04aca25285173c8e110 SHA-1: 167657afe6691d61178261988f5b220ca15c5bc0 SHA-256: b7db16ea248bf90b3f68655498c1581b2e20c792286a8cc5f3991f935af47b4f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, mentions 'sleep disorder ICD 10 Codes' and includes URLs that appear to be part of a link farm. This suggests a malicious intent to manipulate search engine results or distribute potentially harmful content through these links. The ClamAV detection and ML classifier further support the malicious nature of the file.

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://publicationorganizer.com/uploads/1/3/0/2/130287872/6337372.pdf
    • http://worldofbowcraft.com/uploads/1/3/0/4/130488311/kalirolam.pdf
    • http://iachassociation.com/uploads/1/3/0/2/130287462/nikolunetuvumujito.pdf
    • http://cometomejudy.com/uploads/1/3/0/7/130739278/6246963.pdf
    • http://vietthy.com/uploads/1/3/0/6/130639939/1368834.pdf
    • http://paraviontheory.com/uploads/1/3/0/6/130604335/3101758.pdf
    • http://bullfrogimaging.com/uploads/1/3/0/2/130271013/77439.pdf
    • http://beyondstockllc.com/uploads/1/3/0/4/130483263/50cd9bda023d1.pdf
    • http://jixeru.panda-opt.ru/uploads/2020/01/28/75e1352140d.pdf
    • http://lovelifeagain-lifecoachingmore.com/uploads/1/3/0/7/130739756/rowejozuzupu-sedokijivubef.pdf
    • http://rehphotography.org/uploads/1/3/0/5/130590273/130590273.html#chronic+obstructive+sleep+apnea+icd+10

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e3.bin
6f6294ccffe542d4f580c71b8007b4bd2927bbc8e75cd3e9d0d7d8c0a33053a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3 7580 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.