Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5cbe5b47246003e…

MALICIOUS

PDF

47.5 KB Authoring application: Pdftk
MD5: 058e6a6bdb0b2fb15a0d7cd3d6341197 SHA-1: 8488983efa503c14a6e247c0734d10fa3ac0b5bb SHA-256: d5cbe5b47246003e62b6cc7b7e1266a969a7edb8cc39c5698b54c53e8ac6c75b
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and exhibits a PDF_SEO_LINK_FARM heuristic, indicating it contains numerous external links. The embedded URLs likely lead to malicious content or phishing sites. No scripts were extracted from this sample, but the structure and heuristics strongly suggest a phishing or malware delivery attempt.

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://paintingcontractorct.com/uploads/1/3/0/4/130489536/929d41.pdf
    • http://1amulet.ru/uploads/2020/01/28/vonasufibivawukezix.pdf
    • http://dafa.samba-careers.online/uploads/2020/01/28/9070914.pdf
    • http://kefese.lux-scent.ru/uploads/2020/01/28/semajujujo_magil.pdf
    • http://theamazingtruth.com/uploads/1/3/0/7/130776791/vixojajigonizufugoj.pdf
    • http://stanleyskidsministry.org/uploads/1/3/0/2/130289021/lobewa_nemigubos.pdf
    • http://dollarsfordoorsllc.com/uploads/1/3/0/6/130620916/0f24522cfbb5f.pdf
    • http://neokundalini.org/uploads/1/3/0/3/130323968/130323968.html#balma+song+odia

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001188.bin
b8db385289b84e1694cdb914dbf3d67ddb029115b92e160901704e028cd8ccf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1188 8784 bytes
font_01_sfnt_off000066a7.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 16036 bytes
font_02_sfnt_off00007aa0.bin
e581cdf7f018f3a710087a2d3c266d27c819ba0ca3abe180f76534e5fa23a541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA0 3304 bytes

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