Malicious PDF — malware analysis report

Static analysis result for SHA-256 960152e1f460e6ce…

MALICIOUS

PDF

42.7 KB Authoring application: pdf-parser
MD5: e6a4aa3a2076c7aeb40c577a4234b603 SHA-1: d3d371212593d704d30c80f76202166122517ba6 SHA-256: 960152e1f460e6ce42b4cf3a37d5b5f83b84e3b3761a45e271ec1d518c0b86d7
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF documents, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the critical heuristic 'PDF_SEO_LINK_FARM' strongly indicate a phishing or traffic redirection scheme. No scripts were extracted from this sample, limiting the analysis of direct payload execution.

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://shakhveledova.online/uploads/2020/01/28/7292828.pdf
    • http://oliviaiannotti.com/uploads/1/3/0/4/130488810/3048345.pdf
    • http://poliotoolkit.org/uploads/1/3/0/3/130323894/2063837.pdf
    • http://tura.xpinoza.com/uploads/2020/01/28/nemominimumanoduwubo.pdf
    • http://sligergames.com/uploads/1/3/0/6/130603882/ec0a6.pdf
    • http://nj-photo.dk/uploads/1/3/0/4/130483751/doduxegu_poladevov.pdf
    • http://tfsforsale.com/uploads/1/3/0/4/130483413/2373662.pdf
    • http://buy-consoles.com/uploads/1/3/0/4/130491513/568877.pdf
    • http://procon-loe.ru/uploads/1/3/0/6/130621401/loxoxifum_fibek.pdf
    • http://barrons-independent.com/uploads/1/3/0/6/130605212/130605212.html#12v+7ah+sealed+lead+acid+battery+charger+circuit

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013e1.bin
125069f2ea662d15c72be581ef6f0a742082da6cd5c52f6d10c8531138943ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E1 9236 bytes

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