Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a795785cc4e773e…

MALICIOUS

PDF

30.0 KB Authoring application: Karbon
MD5: dd01517daab9ed9657e293ff899bf647 SHA-1: d212adc6041bcf3143497eee9eeb0cb50156d753 SHA-256: 3a795785cc4e773e403c7cf5a645718f5ba43bc70b89faf70f4106985c008248
140 Risk Score

Malware Insights

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

The PDF contains a link farm of external PDF documents, a technique often used to distribute malicious content or conduct phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The document body, while containing some corrupted text, also embeds multiple URLs pointing to other PDF files, reinforcing the attack pattern.

Heuristics 4

  • 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
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://motorpetroleum.com/uploads/1/3/0/6/130605269/guxeduwogeluj.pdf
    • http://northshoreconstructionchriskanter.com/uploads/1/3/0/7/130739756/kidomafemi.pdf
    • http://musingsofageek.com/uploads/1/3/0/5/130590224/8107099.pdf
    • http://ngssmichigan.com/uploads/1/3/0/7/130738765/9903808.pdf
    • http://mormorsgucci.com/uploads/1/3/0/4/130435654/51d68f321e1de.pdf
    • http://musicspabox.com/uploads/1/3/0/2/130270863/muzodirof_vifexot.pdf
    • http://misbailes.com/uploads/1/3/0/5/130589006/130589006.html#dataflow+status+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000109b.bin
223eeea326e71b1119ffc75ee46d8d5a224a7ee434b1e30ef334c54d44afba1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109B 7684 bytes

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