Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcdb9029305b00d…

MALICIOUS

PDF

76.3 KB Authoring application: Pdftk
MD5: 27a2cead49b883912d54e8818ce4a548 SHA-1: ec3284d1b2bca37eb32b5c589dcff3767d0481ad SHA-256: 2bcdb9029305b00d25e0d9b27c31fbc29e9c288d002545da668e7ae20f545c57
152 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The embedded URLs point to various domains, suggesting a link farm or redirection mechanism. ClamAV also identified this as Pdf.Phishing.TtraffRobotInstall, further supporting a phishing or malicious redirection intent. The document body, though partially corrupted, contains text related to sand filters and also includes several of the malicious URLs, reinforcing the attack pattern.

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://midtrans.online/uploads/1/3/0/4/130476050/bagiwuvofalaguzezafo.pdf
    • http://amusee.fr/uploads/1/3/0/2/130291390/39ee4632.pdf
    • http://mycecilialopez.com/uploads/1/3/0/7/130739996/bufum.pdf
    • http://ramacciato.com/uploads/1/3/0/6/130603721/lexodumunowod.pdf
    • http://3170gordondrive.com/uploads/1/3/0/7/130776492/5137158.pdf
    • http://rikatsutsui.com/uploads/1/3/0/4/130476616/17b4f406b1aca.pdf
    • http://www.wickededgeproducts.com/uploads/1/3/0/7/130775503/reregemidusujubaxus.pdf
    • http://krankengymnastik-steglitz.de/uploads/1/3/0/5/130539987/5126089.pdf
    • http://taylororchards.net/uploads/1/3/0/3/130313272/ffdc0d1ba0.pdf
    • http://www.cyberveterans.com/uploads/1/3/0/7/130739704/6908029.pdf
    • http://mta-sts.mx.bettychang.net/uploads/1/3/0/7/130776886/1712d198ef12.pdf
    • http://ugjw.brdge.org/uploads/1/3/0/3/130313391/130313391.html#difference+between+rapid+sand+filter+and+slow+sand+filter

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ab4.bin
22ae1c69f607c8e976d215de8c3cfdf85a0d200415f04b16750952f0c15e1785
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB4 7780 bytes