Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda572ef26560d05…

MALICIOUS

PDF

47.9 KB Authoring application: LibreOffice
MD5: 02e84ce9f7f38e953a0df650e96e8e4c SHA-1: d895943000d4a090772e0d94e49f575bb40e8aaa SHA-256: bda572ef26560d05651c5868187d9ca0776e86265421f34e1856e314f9a515df
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a phishing or malicious content distribution scheme. The document body, while containing garbled text, mentions 'Nikon coolpix 9700 manual', suggesting a lure to trick users into clicking the malicious links. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this document.

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://justscarves.net/uploads/1/3/0/5/130550982/kedevibezawapotideju.pdf
    • http://apkzebra.com/uploads/1/3/0/5/130589268/dce8d19af0.pdf
    • http://michaelmangano.com/uploads/1/3/0/5/130538841/4cb8c1f03a.pdf
    • http://mrsboucher.com/uploads/1/3/0/6/130603819/netok_pimusijejido_nesixode.pdf
    • http://mistymeadowsfarm.net/uploads/1/3/0/4/130483050/mafuteriragafal-rafukuteg-tawefe.pdf
    • http://agingathometechnology.com/uploads/1/3/0/4/130435914/3955075.pdf
    • http://redim.store/uploads/1/3/0/5/130589322/859927.pdf
    • http://sweetblooms4u.com/uploads/1/3/0/6/130640239/xowuf.pdf
    • http://5pointauto.com/uploads/1/3/0/2/130271017/130271017.html#nikon+coolpix+9700+manual

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d9.bin
402b0c871a1b96107e9e5a9aacf0a2bcf34a65ed5a418aa0b5d3c72a0ded14d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9 8888 bytes
font_01_sfnt_off00006b03.bin
448c4d4550ed59c7e8e80b6d66b986666620351883d23913e38401b861762e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B03 16368 bytes
font_02_sfnt_off000080af.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80AF 2616 bytes

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