Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c5dc2141dc6e92…

MALICIOUS

PDF

39.3 KB Authoring application: pdf-parser
MD5: 9cc8dec438160cd15484027c3ef7c6cf SHA-1: bc1bf1304f4b2e486627c89167433b13767d1456 SHA-256: 29c5dc2141dc6e92e794f9b6eebf5e56d29ef4f0ddab30f382aafc3f5d96110e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection and ML classifier also indicate maliciousness. The primary URL, http://digitalmonetizers.com/uploads/1/3/0/2/130271148/tubajibinazaxisadoka.pdf, is likely the intended destination or part of the malicious infrastructure. The document body text is garbled and does not provide clear user-facing content, but the structure suggests a link farm for SEO manipulation or to distribute 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://digitalmonetizers.com/uploads/1/3/0/2/130271148/tubajibinazaxisadoka.pdf
    • http://publicsectorscorecard.weebly.com/uploads/1/3/0/5/130546183/makajekosezibo.pdf
    • http://moniquepaintings.com/uploads/1/3/0/2/130273799/wulojenisutag-jagodopogokom.pdf
    • http://strongfamily.info/uploads/1/3/0/6/130605174/fffd379a.pdf
    • http://lilogisticscenter.com/uploads/1/3/0/6/130605030/javabomaleg-xetalov-soleruw-bimebapewaboz.pdf
    • http://cecilyeiferle.com/uploads/1/3/0/6/130604105/130604105.html#caligrafia+del+abecedario+para+imprimir

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001100.bin
0aac3537e95386905ad47c8322e1f34a4d81645cd21e92c47ad4bce0e6d1455d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1100 8504 bytes

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